1153577Sjhb/*- 2153577Sjhb * Copyright (c) 2005 John Baldwin <jhb@FreeBSD.org> 3153577Sjhb * All rights reserved. 4153577Sjhb * 5153577Sjhb * Redistribution and use in source and binary forms, with or without 6153577Sjhb * modification, are permitted provided that the following conditions 7153577Sjhb * are met: 8153577Sjhb * 1. Redistributions of source code must retain the above copyright 9153577Sjhb * notice, this list of conditions and the following disclaimer. 10153577Sjhb * 2. Redistributions in binary form must reproduce the above copyright 11153577Sjhb * notice, this list of conditions and the following disclaimer in the 12153577Sjhb * documentation and/or other materials provided with the distribution. 13153577Sjhb * 14153577Sjhb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15153577Sjhb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16153577Sjhb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17153577Sjhb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18153577Sjhb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19153577Sjhb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20153577Sjhb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21153577Sjhb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22153577Sjhb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23153577Sjhb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24153577Sjhb * SUCH DAMAGE. 25153577Sjhb */ 26153577Sjhb 27153577Sjhb#include <sys/cdefs.h> 28153577Sjhb__FBSDID("$FreeBSD: releng/10.2/sys/dev/pci/vga_pci.c 284503 2015-06-17 07:41:53Z hselasky $"); 29153577Sjhb 30153577Sjhb/* 31153577Sjhb * Simple driver for PCI VGA display devices. Drivers such as agp(4) and 32153577Sjhb * drm(4) should attach as children of this device. 33153577Sjhb * 34153577Sjhb * XXX: The vgapci name is a hack until we somehow merge the isa vga driver 35153577Sjhb * in or rename it. 36153577Sjhb */ 37153577Sjhb 38153577Sjhb#include <sys/param.h> 39153577Sjhb#include <sys/bus.h> 40153577Sjhb#include <sys/kernel.h> 41153577Sjhb#include <sys/module.h> 42189373Sjhb#include <sys/rman.h> 43198251Sjkim#include <sys/sysctl.h> 44189373Sjhb#include <sys/systm.h> 45153577Sjhb 46254882Sdumbbell#if defined(__amd64__) || defined(__i386__) || defined(__ia64__) 47254882Sdumbbell#include <vm/vm.h> 48254882Sdumbbell#include <vm/pmap.h> 49254882Sdumbbell#endif 50254882Sdumbbell 51153577Sjhb#include <dev/pci/pcireg.h> 52153577Sjhb#include <dev/pci/pcivar.h> 53153577Sjhb 54189373Sjhbstruct vga_resource { 55189373Sjhb struct resource *vr_res; 56189373Sjhb int vr_refs; 57189373Sjhb}; 58189373Sjhb 59183095Sjhbstruct vga_pci_softc { 60183095Sjhb device_t vga_msi_child; /* Child driver using MSI. */ 61249315Sjhb struct vga_resource vga_bars[PCIR_MAX_BAR_0 + 1]; 62249315Sjhb struct vga_resource vga_bios; 63183095Sjhb}; 64183095Sjhb 65198251SjkimSYSCTL_DECL(_hw_pci); 66198251Sjkim 67255571Sdumbbellstatic struct vga_resource *lookup_res(struct vga_pci_softc *sc, int rid); 68255571Sdumbbellstatic struct resource *vga_pci_alloc_resource(device_t dev, device_t child, 69255571Sdumbbell int type, int *rid, u_long start, u_long end, u_long count, u_int flags); 70255571Sdumbbellstatic int vga_pci_release_resource(device_t dev, device_t child, int type, 71255571Sdumbbell int rid, struct resource *r); 72255571Sdumbbell 73198251Sjkimint vga_pci_default_unit = -1; 74198251SjkimTUNABLE_INT("hw.pci.default_vgapci_unit", &vga_pci_default_unit); 75198964SjkimSYSCTL_INT(_hw_pci, OID_AUTO, default_vgapci_unit, CTLFLAG_RDTUN, 76198251Sjkim &vga_pci_default_unit, -1, "Default VGA-compatible display"); 77198251Sjkim 78254882Sdumbbellint 79254882Sdumbbellvga_pci_is_boot_display(device_t dev) 80254882Sdumbbell{ 81259741Sdumbbell int unit; 82259741Sdumbbell device_t pcib; 83259741Sdumbbell uint16_t config; 84254882Sdumbbell 85259741Sdumbbell /* Check that the given device is a video card */ 86259741Sdumbbell if ((pci_get_class(dev) != PCIC_DISPLAY && 87259741Sdumbbell (pci_get_class(dev) != PCIC_OLD || 88259741Sdumbbell pci_get_subclass(dev) != PCIS_OLD_VGA))) 89259741Sdumbbell return (0); 90259741Sdumbbell 91259741Sdumbbell unit = device_get_unit(dev); 92259741Sdumbbell 93259741Sdumbbell if (vga_pci_default_unit >= 0) { 94259741Sdumbbell /* 95259741Sdumbbell * The boot display device was determined by a previous 96259741Sdumbbell * call to this function, or the user forced it using 97259741Sdumbbell * the hw.pci.default_vgapci_unit tunable. 98259741Sdumbbell */ 99259741Sdumbbell return (vga_pci_default_unit == unit); 100259741Sdumbbell } 101259741Sdumbbell 102254882Sdumbbell /* 103259741Sdumbbell * The primary video card used as a boot display must have the 104259741Sdumbbell * "I/O" and "Memory Address Space Decoding" bits set in its 105259741Sdumbbell * Command register. 106259741Sdumbbell * 107259741Sdumbbell * Furthermore, if the card is attached to a bridge, instead of 108259741Sdumbbell * the root PCI bus, the bridge must have the "VGA Enable" bit 109259741Sdumbbell * set in its Control register. 110254882Sdumbbell */ 111259741Sdumbbell 112259741Sdumbbell pcib = device_get_parent(device_get_parent(dev)); 113259741Sdumbbell if (device_get_devclass(device_get_parent(pcib)) == 114259741Sdumbbell devclass_find("pci")) { 115259741Sdumbbell /* 116259741Sdumbbell * The parent bridge is a PCI-to-PCI bridge: check the 117259741Sdumbbell * value of the "VGA Enable" bit. 118259741Sdumbbell */ 119259741Sdumbbell config = pci_read_config(pcib, PCIR_BRIDGECTL_1, 2); 120259741Sdumbbell if ((config & PCIB_BCR_VGA_ENABLE) == 0) 121259741Sdumbbell return (0); 122259741Sdumbbell } 123259741Sdumbbell 124259741Sdumbbell config = pci_read_config(dev, PCIR_COMMAND, 2); 125259741Sdumbbell if ((config & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN)) == 0) 126259741Sdumbbell return (0); 127259741Sdumbbell 128284503Shselasky /* 129284503Shselasky * Disable interrupts until a chipset driver is loaded for 130284503Shselasky * this PCI device. Else unhandled display adapter interrupts 131284503Shselasky * might freeze the CPU. 132284503Shselasky */ 133284503Shselasky pci_write_config(dev, PCIR_COMMAND, config | PCIM_CMD_INTxDIS, 2); 134284503Shselasky 135259741Sdumbbell /* This video card is the boot display: record its unit number. */ 136259741Sdumbbell vga_pci_default_unit = unit; 137259741Sdumbbell device_set_flags(dev, 1); 138259741Sdumbbell 139259741Sdumbbell return (1); 140254882Sdumbbell} 141254882Sdumbbell 142254882Sdumbbellvoid * 143254882Sdumbbellvga_pci_map_bios(device_t dev, size_t *size) 144254882Sdumbbell{ 145254882Sdumbbell int rid; 146254882Sdumbbell struct resource *res; 147254882Sdumbbell 148254882Sdumbbell#if defined(__amd64__) || defined(__i386__) || defined(__ia64__) 149254882Sdumbbell if (vga_pci_is_boot_display(dev)) { 150254882Sdumbbell /* 151254882Sdumbbell * On x86, the System BIOS copy the default display 152254882Sdumbbell * device's Video BIOS at a fixed location in system 153254882Sdumbbell * memory (0xC0000, 128 kBytes long) at boot time. 154254882Sdumbbell * 155254882Sdumbbell * We use this copy for the default boot device, because 156254882Sdumbbell * the original ROM may not be valid after boot. 157254882Sdumbbell */ 158254882Sdumbbell 159254882Sdumbbell *size = VGA_PCI_BIOS_SHADOW_SIZE; 160254882Sdumbbell return (pmap_mapbios(VGA_PCI_BIOS_SHADOW_ADDR, *size)); 161254882Sdumbbell } 162254882Sdumbbell#endif 163254882Sdumbbell 164254882Sdumbbell rid = PCIR_BIOS; 165255571Sdumbbell res = vga_pci_alloc_resource(dev, NULL, SYS_RES_MEMORY, &rid, 0ul, 166255571Sdumbbell ~0ul, 1, RF_ACTIVE); 167254882Sdumbbell if (res == NULL) { 168254882Sdumbbell return (NULL); 169254882Sdumbbell } 170254882Sdumbbell 171254882Sdumbbell *size = rman_get_size(res); 172254882Sdumbbell return (rman_get_virtual(res)); 173254882Sdumbbell} 174254882Sdumbbell 175254882Sdumbbellvoid 176254882Sdumbbellvga_pci_unmap_bios(device_t dev, void *bios) 177254882Sdumbbell{ 178255571Sdumbbell struct vga_resource *vr; 179254882Sdumbbell 180254882Sdumbbell if (bios == NULL) { 181254882Sdumbbell return; 182254882Sdumbbell } 183254882Sdumbbell 184254882Sdumbbell#if defined(__amd64__) || defined(__i386__) || defined(__ia64__) 185254882Sdumbbell if (vga_pci_is_boot_display(dev)) { 186254882Sdumbbell /* We mapped the BIOS shadow copy located at 0xC0000. */ 187254882Sdumbbell pmap_unmapdev((vm_offset_t)bios, VGA_PCI_BIOS_SHADOW_SIZE); 188254882Sdumbbell 189254882Sdumbbell return; 190254882Sdumbbell } 191254882Sdumbbell#endif 192254882Sdumbbell 193254882Sdumbbell /* 194255571Sdumbbell * Look up the PCIR_BIOS resource in our softc. It should match 195255571Sdumbbell * the address we returned previously. 196254882Sdumbbell */ 197255571Sdumbbell vr = lookup_res(device_get_softc(dev), PCIR_BIOS); 198255571Sdumbbell KASSERT(vr->vr_res != NULL, ("vga_pci_unmap_bios: bios not mapped")); 199255571Sdumbbell KASSERT(rman_get_virtual(vr->vr_res) == bios, 200255571Sdumbbell ("vga_pci_unmap_bios: mismatch")); 201255571Sdumbbell vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, PCIR_BIOS, 202255571Sdumbbell vr->vr_res); 203254882Sdumbbell} 204254882Sdumbbell 205153577Sjhbstatic int 206153577Sjhbvga_pci_probe(device_t dev) 207153577Sjhb{ 208153577Sjhb 209153577Sjhb switch (pci_get_class(dev)) { 210153577Sjhb case PCIC_DISPLAY: 211153577Sjhb break; 212153577Sjhb case PCIC_OLD: 213153577Sjhb if (pci_get_subclass(dev) != PCIS_OLD_VGA) 214153577Sjhb return (ENXIO); 215153577Sjhb break; 216153577Sjhb default: 217153577Sjhb return (ENXIO); 218153577Sjhb } 219198251Sjkim 220198251Sjkim /* Probe default display. */ 221259741Sdumbbell vga_pci_is_boot_display(dev); 222198251Sjkim 223153577Sjhb device_set_desc(dev, "VGA-compatible display"); 224153646Sjhb return (BUS_PROBE_GENERIC); 225153577Sjhb} 226153577Sjhb 227153577Sjhbstatic int 228153577Sjhbvga_pci_attach(device_t dev) 229153577Sjhb{ 230153577Sjhb 231153577Sjhb bus_generic_probe(dev); 232153577Sjhb 233153577Sjhb /* Always create a drm child for now to make it easier on drm. */ 234153577Sjhb device_add_child(dev, "drm", -1); 235235846Skib device_add_child(dev, "drmn", -1); 236153577Sjhb bus_generic_attach(dev); 237259741Sdumbbell 238259741Sdumbbell if (vga_pci_is_boot_display(dev)) 239259741Sdumbbell device_printf(dev, "Boot video device\n"); 240259741Sdumbbell 241153577Sjhb return (0); 242153577Sjhb} 243153577Sjhb 244153577Sjhbstatic int 245153577Sjhbvga_pci_suspend(device_t dev) 246153577Sjhb{ 247153577Sjhb 248199002Sjkim return (bus_generic_suspend(dev)); 249153577Sjhb} 250153577Sjhb 251153577Sjhbstatic int 252153577Sjhbvga_pci_resume(device_t dev) 253153577Sjhb{ 254153577Sjhb 255153577Sjhb return (bus_generic_resume(dev)); 256153577Sjhb} 257153577Sjhb 258153577Sjhb/* Bus interface. */ 259153577Sjhb 260153577Sjhbstatic int 261153577Sjhbvga_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 262153577Sjhb{ 263153577Sjhb 264153577Sjhb return (BUS_READ_IVAR(device_get_parent(dev), dev, which, result)); 265153577Sjhb} 266153577Sjhb 267153577Sjhbstatic int 268153577Sjhbvga_pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 269153577Sjhb{ 270153577Sjhb 271153577Sjhb return (EINVAL); 272153577Sjhb} 273153577Sjhb 274183194Srnolandstatic int 275183194Srnolandvga_pci_setup_intr(device_t dev, device_t child, struct resource *irq, 276183194Srnoland int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg, 277183194Srnoland void **cookiep) 278183194Srnoland{ 279183194Srnoland return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags, 280183194Srnoland filter, intr, arg, cookiep)); 281183194Srnoland} 282183194Srnoland 283183194Srnolandstatic int 284183194Srnolandvga_pci_teardown_intr(device_t dev, device_t child, struct resource *irq, 285183194Srnoland void *cookie) 286183194Srnoland{ 287183194Srnoland return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie)); 288183194Srnoland} 289183194Srnoland 290249315Sjhbstatic struct vga_resource * 291249315Sjhblookup_res(struct vga_pci_softc *sc, int rid) 292249315Sjhb{ 293249315Sjhb int bar; 294249315Sjhb 295249315Sjhb if (rid == PCIR_BIOS) 296249315Sjhb return (&sc->vga_bios); 297249315Sjhb bar = PCI_RID2BAR(rid); 298249315Sjhb if (bar >= 0 && bar <= PCIR_MAX_BAR_0) 299249315Sjhb return (&sc->vga_bars[bar]); 300249315Sjhb return (NULL); 301249315Sjhb} 302249315Sjhb 303153577Sjhbstatic struct resource * 304153577Sjhbvga_pci_alloc_resource(device_t dev, device_t child, int type, int *rid, 305153577Sjhb u_long start, u_long end, u_long count, u_int flags) 306153577Sjhb{ 307249315Sjhb struct vga_resource *vr; 308153577Sjhb 309189373Sjhb switch (type) { 310189373Sjhb case SYS_RES_MEMORY: 311189373Sjhb case SYS_RES_IOPORT: 312189373Sjhb /* 313189373Sjhb * For BARs, we cache the resource so that we only allocate it 314189373Sjhb * from the PCI bus once. 315189373Sjhb */ 316249315Sjhb vr = lookup_res(device_get_softc(dev), *rid); 317249315Sjhb if (vr == NULL) 318189373Sjhb return (NULL); 319249315Sjhb if (vr->vr_res == NULL) 320249315Sjhb vr->vr_res = bus_alloc_resource(dev, type, rid, start, 321249315Sjhb end, count, flags); 322249315Sjhb if (vr->vr_res != NULL) 323249315Sjhb vr->vr_refs++; 324249315Sjhb return (vr->vr_res); 325189373Sjhb } 326153577Sjhb return (bus_alloc_resource(dev, type, rid, start, end, count, flags)); 327153577Sjhb} 328153577Sjhb 329153577Sjhbstatic int 330153577Sjhbvga_pci_release_resource(device_t dev, device_t child, int type, int rid, 331153577Sjhb struct resource *r) 332153577Sjhb{ 333249315Sjhb struct vga_resource *vr; 334249315Sjhb int error; 335153577Sjhb 336189373Sjhb switch (type) { 337189373Sjhb case SYS_RES_MEMORY: 338189373Sjhb case SYS_RES_IOPORT: 339189373Sjhb /* 340189373Sjhb * For BARs, we release the resource from the PCI bus 341189373Sjhb * when the last child reference goes away. 342189373Sjhb */ 343249315Sjhb vr = lookup_res(device_get_softc(dev), rid); 344249315Sjhb if (vr == NULL) 345189373Sjhb return (EINVAL); 346249315Sjhb if (vr->vr_res == NULL) 347189373Sjhb return (EINVAL); 348249315Sjhb KASSERT(vr->vr_res == r, ("vga_pci resource mismatch")); 349249315Sjhb if (vr->vr_refs > 1) { 350249315Sjhb vr->vr_refs--; 351189373Sjhb return (0); 352189373Sjhb } 353249315Sjhb KASSERT(vr->vr_refs > 0, 354189373Sjhb ("vga_pci resource reference count underflow")); 355189373Sjhb error = bus_release_resource(dev, type, rid, r); 356189373Sjhb if (error == 0) { 357249315Sjhb vr->vr_res = NULL; 358249315Sjhb vr->vr_refs = 0; 359189373Sjhb } 360189373Sjhb return (error); 361189373Sjhb } 362189373Sjhb 363153577Sjhb return (bus_release_resource(dev, type, rid, r)); 364153577Sjhb} 365153577Sjhb 366153577Sjhb/* PCI interface. */ 367153577Sjhb 368153577Sjhbstatic uint32_t 369153577Sjhbvga_pci_read_config(device_t dev, device_t child, int reg, int width) 370153577Sjhb{ 371153577Sjhb 372153577Sjhb return (pci_read_config(dev, reg, width)); 373153577Sjhb} 374153577Sjhb 375153577Sjhbstatic void 376205018Sjhbvga_pci_write_config(device_t dev, device_t child, int reg, 377153577Sjhb uint32_t val, int width) 378153577Sjhb{ 379153577Sjhb 380153577Sjhb pci_write_config(dev, reg, val, width); 381153577Sjhb} 382153577Sjhb 383153577Sjhbstatic int 384153577Sjhbvga_pci_enable_busmaster(device_t dev, device_t child) 385153577Sjhb{ 386153577Sjhb 387153577Sjhb return (pci_enable_busmaster(dev)); 388153577Sjhb} 389153577Sjhb 390153577Sjhbstatic int 391153577Sjhbvga_pci_disable_busmaster(device_t dev, device_t child) 392153577Sjhb{ 393153577Sjhb 394153577Sjhb return (pci_disable_busmaster(dev)); 395153577Sjhb} 396153577Sjhb 397153577Sjhbstatic int 398153577Sjhbvga_pci_enable_io(device_t dev, device_t child, int space) 399153577Sjhb{ 400153577Sjhb 401153577Sjhb device_printf(dev, "child %s requested pci_enable_io\n", 402153577Sjhb device_get_nameunit(child)); 403153577Sjhb return (pci_enable_io(dev, space)); 404153577Sjhb} 405153577Sjhb 406153577Sjhbstatic int 407153577Sjhbvga_pci_disable_io(device_t dev, device_t child, int space) 408153577Sjhb{ 409153577Sjhb 410153577Sjhb device_printf(dev, "child %s requested pci_disable_io\n", 411153577Sjhb device_get_nameunit(child)); 412153577Sjhb return (pci_disable_io(dev, space)); 413153577Sjhb} 414153577Sjhb 415153577Sjhbstatic int 416183095Sjhbvga_pci_get_vpd_ident(device_t dev, device_t child, const char **identptr) 417183095Sjhb{ 418183095Sjhb 419183095Sjhb return (pci_get_vpd_ident(dev, identptr)); 420183095Sjhb} 421183095Sjhb 422183095Sjhbstatic int 423183095Sjhbvga_pci_get_vpd_readonly(device_t dev, device_t child, const char *kw, 424183095Sjhb const char **vptr) 425183095Sjhb{ 426183095Sjhb 427183095Sjhb return (pci_get_vpd_readonly(dev, kw, vptr)); 428183095Sjhb} 429183095Sjhb 430183095Sjhbstatic int 431153577Sjhbvga_pci_set_powerstate(device_t dev, device_t child, int state) 432153577Sjhb{ 433153577Sjhb 434153577Sjhb device_printf(dev, "child %s requested pci_set_powerstate\n", 435153577Sjhb device_get_nameunit(child)); 436153577Sjhb return (pci_set_powerstate(dev, state)); 437153577Sjhb} 438153577Sjhb 439153577Sjhbstatic int 440153577Sjhbvga_pci_get_powerstate(device_t dev, device_t child) 441153577Sjhb{ 442153577Sjhb 443153577Sjhb device_printf(dev, "child %s requested pci_get_powerstate\n", 444153577Sjhb device_get_nameunit(child)); 445153577Sjhb return (pci_get_powerstate(dev)); 446153577Sjhb} 447153577Sjhb 448153577Sjhbstatic int 449153577Sjhbvga_pci_assign_interrupt(device_t dev, device_t child) 450153577Sjhb{ 451153577Sjhb 452153577Sjhb device_printf(dev, "child %s requested pci_assign_interrupt\n", 453153577Sjhb device_get_nameunit(child)); 454153577Sjhb return (PCI_ASSIGN_INTERRUPT(device_get_parent(dev), dev)); 455153577Sjhb} 456153577Sjhb 457153577Sjhbstatic int 458232472Sjhbvga_pci_find_cap(device_t dev, device_t child, int capability, 459232472Sjhb int *capreg) 460232472Sjhb{ 461232472Sjhb 462232472Sjhb return (pci_find_cap(dev, capability, capreg)); 463232472Sjhb} 464232472Sjhb 465232472Sjhbstatic int 466153577Sjhbvga_pci_find_extcap(device_t dev, device_t child, int capability, 467153577Sjhb int *capreg) 468153577Sjhb{ 469153577Sjhb 470153577Sjhb return (pci_find_extcap(dev, capability, capreg)); 471153577Sjhb} 472153577Sjhb 473183095Sjhbstatic int 474232472Sjhbvga_pci_find_htcap(device_t dev, device_t child, int capability, 475232472Sjhb int *capreg) 476232472Sjhb{ 477232472Sjhb 478232472Sjhb return (pci_find_htcap(dev, capability, capreg)); 479232472Sjhb} 480232472Sjhb 481232472Sjhbstatic int 482183095Sjhbvga_pci_alloc_msi(device_t dev, device_t child, int *count) 483183095Sjhb{ 484183095Sjhb struct vga_pci_softc *sc; 485183095Sjhb int error; 486183095Sjhb 487183095Sjhb sc = device_get_softc(dev); 488183095Sjhb if (sc->vga_msi_child != NULL) 489183095Sjhb return (EBUSY); 490183095Sjhb error = pci_alloc_msi(dev, count); 491183095Sjhb if (error == 0) 492183095Sjhb sc->vga_msi_child = child; 493183095Sjhb return (error); 494183095Sjhb} 495183095Sjhb 496183095Sjhbstatic int 497183095Sjhbvga_pci_alloc_msix(device_t dev, device_t child, int *count) 498183095Sjhb{ 499183095Sjhb struct vga_pci_softc *sc; 500183095Sjhb int error; 501183095Sjhb 502183095Sjhb sc = device_get_softc(dev); 503183095Sjhb if (sc->vga_msi_child != NULL) 504183095Sjhb return (EBUSY); 505183095Sjhb error = pci_alloc_msix(dev, count); 506183095Sjhb if (error == 0) 507183095Sjhb sc->vga_msi_child = child; 508183095Sjhb return (error); 509183095Sjhb} 510183095Sjhb 511183095Sjhbstatic int 512183095Sjhbvga_pci_remap_msix(device_t dev, device_t child, int count, 513183095Sjhb const u_int *vectors) 514183095Sjhb{ 515183095Sjhb struct vga_pci_softc *sc; 516183095Sjhb 517183095Sjhb sc = device_get_softc(dev); 518183095Sjhb if (sc->vga_msi_child != child) 519183095Sjhb return (ENXIO); 520183095Sjhb return (pci_remap_msix(dev, count, vectors)); 521183095Sjhb} 522183095Sjhb 523183095Sjhbstatic int 524183095Sjhbvga_pci_release_msi(device_t dev, device_t child) 525183095Sjhb{ 526183095Sjhb struct vga_pci_softc *sc; 527183095Sjhb int error; 528183095Sjhb 529183095Sjhb sc = device_get_softc(dev); 530183095Sjhb if (sc->vga_msi_child != child) 531183095Sjhb return (ENXIO); 532183095Sjhb error = pci_release_msi(dev); 533183095Sjhb if (error == 0) 534183095Sjhb sc->vga_msi_child = NULL; 535183095Sjhb return (error); 536183095Sjhb} 537183095Sjhb 538183095Sjhbstatic int 539183095Sjhbvga_pci_msi_count(device_t dev, device_t child) 540183095Sjhb{ 541183095Sjhb 542183095Sjhb return (pci_msi_count(dev)); 543183095Sjhb} 544183095Sjhb 545183095Sjhbstatic int 546183095Sjhbvga_pci_msix_count(device_t dev, device_t child) 547183095Sjhb{ 548183095Sjhb 549183095Sjhb return (pci_msix_count(dev)); 550183095Sjhb} 551183095Sjhb 552249476Skibstatic bus_dma_tag_t 553249476Skibvga_pci_get_dma_tag(device_t bus, device_t child) 554249476Skib{ 555249476Skib 556249476Skib return (bus_get_dma_tag(bus)); 557249476Skib} 558249476Skib 559153577Sjhbstatic device_method_t vga_pci_methods[] = { 560153577Sjhb /* Device interface */ 561153577Sjhb DEVMETHOD(device_probe, vga_pci_probe), 562153577Sjhb DEVMETHOD(device_attach, vga_pci_attach), 563153577Sjhb DEVMETHOD(device_shutdown, bus_generic_shutdown), 564153577Sjhb DEVMETHOD(device_suspend, vga_pci_suspend), 565153577Sjhb DEVMETHOD(device_resume, vga_pci_resume), 566153577Sjhb 567153577Sjhb /* Bus interface */ 568153577Sjhb DEVMETHOD(bus_read_ivar, vga_pci_read_ivar), 569153577Sjhb DEVMETHOD(bus_write_ivar, vga_pci_write_ivar), 570183194Srnoland DEVMETHOD(bus_setup_intr, vga_pci_setup_intr), 571183194Srnoland DEVMETHOD(bus_teardown_intr, vga_pci_teardown_intr), 572153577Sjhb DEVMETHOD(bus_alloc_resource, vga_pci_alloc_resource), 573153577Sjhb DEVMETHOD(bus_release_resource, vga_pci_release_resource), 574153577Sjhb DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 575153577Sjhb DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 576249476Skib DEVMETHOD(bus_get_dma_tag, vga_pci_get_dma_tag), 577153577Sjhb 578153577Sjhb /* PCI interface */ 579153577Sjhb DEVMETHOD(pci_read_config, vga_pci_read_config), 580153577Sjhb DEVMETHOD(pci_write_config, vga_pci_write_config), 581153577Sjhb DEVMETHOD(pci_enable_busmaster, vga_pci_enable_busmaster), 582153577Sjhb DEVMETHOD(pci_disable_busmaster, vga_pci_disable_busmaster), 583153577Sjhb DEVMETHOD(pci_enable_io, vga_pci_enable_io), 584153577Sjhb DEVMETHOD(pci_disable_io, vga_pci_disable_io), 585183095Sjhb DEVMETHOD(pci_get_vpd_ident, vga_pci_get_vpd_ident), 586183095Sjhb DEVMETHOD(pci_get_vpd_readonly, vga_pci_get_vpd_readonly), 587153577Sjhb DEVMETHOD(pci_get_powerstate, vga_pci_get_powerstate), 588153577Sjhb DEVMETHOD(pci_set_powerstate, vga_pci_set_powerstate), 589153577Sjhb DEVMETHOD(pci_assign_interrupt, vga_pci_assign_interrupt), 590232472Sjhb DEVMETHOD(pci_find_cap, vga_pci_find_cap), 591153577Sjhb DEVMETHOD(pci_find_extcap, vga_pci_find_extcap), 592232472Sjhb DEVMETHOD(pci_find_htcap, vga_pci_find_htcap), 593183095Sjhb DEVMETHOD(pci_alloc_msi, vga_pci_alloc_msi), 594183095Sjhb DEVMETHOD(pci_alloc_msix, vga_pci_alloc_msix), 595183095Sjhb DEVMETHOD(pci_remap_msix, vga_pci_remap_msix), 596183095Sjhb DEVMETHOD(pci_release_msi, vga_pci_release_msi), 597183095Sjhb DEVMETHOD(pci_msi_count, vga_pci_msi_count), 598183095Sjhb DEVMETHOD(pci_msix_count, vga_pci_msix_count), 599153577Sjhb 600153577Sjhb { 0, 0 } 601153577Sjhb}; 602153577Sjhb 603153577Sjhbstatic driver_t vga_pci_driver = { 604153577Sjhb "vgapci", 605153577Sjhb vga_pci_methods, 606183095Sjhb sizeof(struct vga_pci_softc), 607153577Sjhb}; 608153577Sjhb 609153577Sjhbstatic devclass_t vga_devclass; 610153577Sjhb 611153577SjhbDRIVER_MODULE(vgapci, pci, vga_pci_driver, vga_devclass, 0, 0); 612