2 * Copyright (c) 2000-2001 by Coleman Kane <cokane@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Gardner Buchanan.
16 * 4. The name of Gardner Buchanan may not be used to endorse or promote
17 * products derived from this software without specific prior written
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 /* 3dfx driver for FreeBSD 4.x - Finished 11 May 2000, 12:25AM ET
37 * Copyright (C) 2000-2001, by Coleman Kane <cokane@FreeBSD.org>,
38 * based upon the 3dfx driver written for linux, by Daryll Straus, Jon Taylor,
39 * and Jens Axboe, located at http://linux.3dfx.com.
42 #include <sys/param.h>
45 #include <sys/cdefs.h>
47 #include <sys/fcntl.h>
49 #include <sys/filedesc.h>
50 #include <sys/filio.h>
51 #include <sys/ioccom.h>
52 #include <sys/kernel.h>
53 #include <sys/module.h>
54 #include <sys/malloc.h>
56 #include <sys/signalvar.h>
57 #include <sys/systm.h>
60 #include <dev/pci/pcivar.h>
61 #include <dev/pci/pcireg.h>
64 #include <vm/vm_kern.h>
66 #include <vm/vm_extern.h>
68 /* rman.h depends on machine/bus.h */
69 #include <machine/resource.h>
70 #include <machine/bus.h>
73 /* This must come first */
76 #include <dev/tdfx/tdfx_linux.h>
79 #include <dev/tdfx/tdfx_io.h>
80 #include <dev/tdfx/tdfx_vars.h>
81 #include <dev/tdfx/tdfx_pci.h>
84 static devclass_t tdfx_devclass;
87 static int tdfx_count = 0;
90 /* Set up the boot probe/attach routines */
91 static device_method_t tdfx_methods[] = {
92 DEVMETHOD(device_probe, tdfx_probe),
93 DEVMETHOD(device_attach, tdfx_attach),
94 DEVMETHOD(device_detach, tdfx_detach),
95 DEVMETHOD(device_shutdown, tdfx_shutdown),
99 MALLOC_DEFINE(M_TDFX,"TDFX Driver","3DFX Graphics[/2D]/3D Accelerator(s)");
102 MODULE_DEPEND(tdfx, linux, 1, 1, 1);
103 LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX);
106 /* Char. Dev. file operations structure */
107 static struct cdevsw tdfx_cdev = {
108 .d_version = D_VERSION,
109 .d_flags = D_NEEDGIANT,
111 .d_close = tdfx_close,
112 .d_ioctl = tdfx_ioctl,
118 tdfx_probe(device_t dev)
121 * probe routine called on kernel boot to register supported devices. We get
122 * a device structure to work with, and we can test the VENDOR/DEVICE IDs to
123 * see if this PCI device is one that we support. Return BUS_PRROBE_DEFAULT
124 * if yes, ENXIO if not.
126 switch(pci_get_devid(dev)) {
127 case PCI_DEVICE_ALLIANCE_AT3D:
128 device_set_desc(dev, "ProMotion At3D 3D Accelerator");
129 return BUS_PROBE_DEFAULT;
130 case PCI_DEVICE_3DFX_VOODOO2:
131 device_set_desc(dev, "3DFX Voodoo II 3D Accelerator");
132 return BUS_PROBE_DEFAULT;
133 /*case PCI_DEVICE_3DFX_BANSHEE:
134 device_set_desc(dev, "3DFX Voodoo Banshee 2D/3D Graphics Accelerator");
135 return BUS_PROBE_DEFAULT;
136 case PCI_DEVICE_3DFX_VOODOO3:
137 device_set_desc(dev, "3DFX Voodoo3 2D/3D Graphics Accelerator");
138 return BUS_PROBE_DEFAULT;*/
139 case PCI_DEVICE_3DFX_VOODOO1:
140 device_set_desc(dev, "3DFX Voodoo Graphics 3D Accelerator");
141 return BUS_PROBE_DEFAULT;
148 tdfx_attach(device_t dev) {
150 * The attach routine is called after the probe routine successfully says it
151 * supports a given card. We now proceed to initialize this card for use with
152 * the system. I want to map the device memory for userland allocation and
153 * fill an information structure with information on this card. I'd also like
154 * to set Write Combining with the MTRR code so that we can hopefully speed
155 * up memory writes. The last thing is to register the character device
156 * interface to the card, so we can open it from /dev/3dfxN, where N is a
157 * small, whole number.
159 struct tdfx_softc *tdfx_info;
161 /* rid value tells bus_alloc_resource where to find the addresses of ports or
162 * of memory ranges in the PCI config space*/
163 int rid = PCIR_BAR(0);
165 /* Increment the card counter (for the ioctl code) */
168 /* Enable MemMap on Voodoo */
169 val = pci_read_config(dev, PCIR_COMMAND, 2);
170 val |= (PCIM_CMD_MEMEN);
171 pci_write_config(dev, PCIR_COMMAND, val, 2);
172 val = pci_read_config(dev, PCIR_COMMAND, 2);
174 /* Fill the soft config struct with info about this device*/
175 tdfx_info = device_get_softc(dev);
176 tdfx_info->dev = dev;
177 tdfx_info->vendor = pci_get_vendor(dev);
178 tdfx_info->type = pci_get_devid(dev) >> 16;
179 tdfx_info->bus = pci_get_bus(dev);
180 tdfx_info->dv = pci_get_slot(dev);
181 tdfx_info->curFile = NULL;
184 * Get the Memory Location from the PCI Config, mask out lower word, since
185 * the config space register is only one word long (this is nicer than a
188 tdfx_info->addr0 = (pci_read_config(dev, 0x10, 4) & 0xffff0000);
190 device_printf(dev, "Base0 @ 0x%x\n", tdfx_info->addr0);
192 /* Notify the VM that we will be mapping some memory later */
193 tdfx_info->memrange = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
194 &rid, RF_ACTIVE | RF_SHAREABLE);
195 if(tdfx_info->memrange == NULL) {
197 device_printf(dev, "Error mapping mem, won't be able to use mmap()\n");
199 tdfx_info->memrid = 0;
202 tdfx_info->memrid = rid;
204 device_printf(dev, "Mapped to: 0x%x\n",
205 (unsigned int)rman_get_start(tdfx_info->memrange));
209 /* Setup for Voodoo3 and Banshee, PIO and an extram Memrange */
210 if(pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO3 ||
211 pci_get_devid(dev) == PCI_DEVICE_3DFX_BANSHEE) {
212 rid = 0x14; /* 2nd mem map */
213 tdfx_info->addr1 = (pci_read_config(dev, 0x14, 4) & 0xffff0000);
215 device_printf(dev, "Base1 @ 0x%x\n", tdfx_info->addr1);
217 tdfx_info->memrange2 = bus_alloc_resource_any(dev,
218 SYS_RES_MEMORY, &rid, RF_ACTIVE | RF_SHAREABLE);
219 if(tdfx_info->memrange2 == NULL) {
221 device_printf(dev, "Mem1 couldn't be allocated, glide may not work.");
223 tdfx_info->memrid2 = 0;
226 tdfx_info->memrid2 = rid;
228 /* Now to map the PIO stuff */
229 rid = PCIR_IOBASE0_2;
230 tdfx_info->pio0 = pci_read_config(dev, 0x2c, 2);
231 tdfx_info->pio0max = pci_read_config(dev, 0x30, 2) + tdfx_info->pio0;
232 tdfx_info->piorange = bus_alloc_resource_any(dev,
233 SYS_RES_IOPORT, &rid, RF_ACTIVE | RF_SHAREABLE);
234 if(tdfx_info->piorange == NULL) {
236 device_printf(dev, "Couldn't map PIO range.");
238 tdfx_info->piorid = 0;
241 tdfx_info->piorid = rid;
244 tdfx_info->addr1 = 0;
245 tdfx_info->memrange2 = NULL;
246 tdfx_info->piorange = NULL;
250 * Set Writecombining, or at least Uncacheable for the memory region, if we
254 if(tdfx_setmtrr(dev) != 0) {
256 device_printf(dev, "Some weird error setting MTRRs");
262 * make_dev registers the cdev to access the 3dfx card from /dev
263 * use hex here for the dev num, simply to provide better support if > 10
264 * voodoo cards, for the mad. The user must set the link, or use MAKEDEV.
265 * Why would we want that many voodoo cards anyhow?
267 tdfx_info->devt = make_dev(&tdfx_cdev, device_get_unit(dev),
268 UID_ROOT, GID_WHEEL, 0600, "3dfx%x", device_get_unit(dev));
274 tdfx_detach(device_t dev) {
275 struct tdfx_softc* tdfx_info;
277 tdfx_info = device_get_softc(dev);
279 /* Delete allocated resource, of course */
280 bus_release_resource(dev, SYS_RES_MEMORY, tdfx_info->memrid,
281 tdfx_info->memrange);
283 /* Release extended Voodoo3/Banshee resources */
284 if(pci_get_devid(dev) == PCI_DEVICE_3DFX_BANSHEE ||
285 pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO3) {
286 if(tdfx_info->memrange2 != NULL)
287 bus_release_resource(dev, SYS_RES_MEMORY, tdfx_info->memrid2,
288 tdfx_info->memrange);
289 /* if(tdfx_info->piorange != NULL)
290 bus_release_resource(dev, SYS_RES_IOPORT, tdfx_info->piorid,
291 tdfx_info->piorange);*/
294 /* Though it is safe to leave the WRCOMB support since the
295 mem driver checks for it, we should remove it in order
296 to free an MTRR for another device */
297 retval = tdfx_clrmtrr(dev);
300 printf("tdfx: For some reason, I couldn't clear the mtrr\n");
302 /* Remove device entry when it can no longer be accessed */
303 destroy_dev(tdfx_info->devt);
308 tdfx_shutdown(device_t dev) {
310 device_printf(dev, "tdfx: Device Shutdown\n");
316 tdfx_clrmtrr(device_t dev) {
317 /* This function removes the MTRR set by the attach call, so it can be used
318 * in the future by other drivers.
321 struct tdfx_softc *tdfx_info = device_get_softc(dev);
323 act = MEMRANGE_SET_REMOVE;
324 retval = mem_range_attr_set(&tdfx_info->mrdesc, &act);
329 tdfx_setmtrr(device_t dev) {
331 * This is the MTRR setting function for the 3dfx card. It is called from
332 * tdfx_attach. If we can't set the MTRR properly, it's not the end of the
333 * world. We can still continue, just with slightly (very slightly) degraded
337 struct tdfx_softc *tdfx_info = device_get_softc(dev);
339 /* The older Voodoo cards have a shorter memrange than the newer ones */
340 if((pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO1) || (pci_get_devid(dev) ==
341 PCI_DEVICE_3DFX_VOODOO2)) {
342 tdfx_info->mrdesc.mr_len = 0x400000;
344 /* The memory descriptor is described as the top 15 bits of the real
346 tdfx_info->mrdesc.mr_base = tdfx_info->addr0 & 0xfffe0000;
348 else if((pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO3) ||
349 (pci_get_devid(dev) == PCI_DEVICE_3DFX_BANSHEE)) {
350 tdfx_info->mrdesc.mr_len = 0x1000000;
351 /* The Voodoo3 and Banshee LFB is the second memory address */
352 /* The memory descriptor is described as the top 15 bits of the real
354 tdfx_info->mrdesc.mr_base = tdfx_info->addr1 & 0xfffe0000;
359 * The Alliance Pro Motion AT3D was not mentioned in the linux
360 * driver as far as MTRR support goes, so I just won't put the
361 * code in here for it. This is where it should go, though.
364 /* Firstly, try to set write combining */
365 tdfx_info->mrdesc.mr_flags = MDF_WRITECOMBINE;
366 bcopy("tdfx", &tdfx_info->mrdesc.mr_owner, 4);
367 act = MEMRANGE_SET_UPDATE;
368 retval = mem_range_attr_set(&tdfx_info->mrdesc, &act);
372 device_printf(dev, "MTRR Set Correctly for tdfx\n");
374 } else if((pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO2) ||
375 (pci_get_devid(dev) == PCI_DEVICE_3DFX_VOODOO1)) {
376 /* if, for some reason we can't set the WRCOMB range with the V1/V2, we
377 * can still possibly use the UNCACHEABLE region for it instead, and help
378 * out in a small way */
379 tdfx_info->mrdesc.mr_flags = MDF_UNCACHEABLE;
380 /* This length of 1000h was taken from the linux device driver... */
381 tdfx_info->mrdesc.mr_len = 0x1000;
384 * If, for some reason, we can't set the MTRR (N/A?) we may still continue
387 device_printf(dev, "MTRR Set Type Uncacheable %x\n",
388 (u_int32_t)tdfx_info->mrdesc.mr_base);
393 device_printf(dev, "Couldn't Set MTRR\n");
401 tdfx_open(struct cdev *dev, int flags, int fmt, struct thread *td)
404 * The open cdev method handles open(2) calls to /dev/3dfx[n]
405 * We can pretty much allow any opening of the device.
407 struct tdfx_softc *tdfx_info = devclass_get_softc(tdfx_devclass,
409 if(tdfx_info->busy != 0) return EBUSY;
411 printf("3dfx: Opened by #%d\n", td->td_proc->p_pid);
413 /* Set the driver as busy */
419 tdfx_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
422 * The close cdev method handles close(2) calls to /dev/3dfx[n]
423 * We'll always want to close the device when it's called.
425 struct tdfx_softc *tdfx_info = devclass_get_softc(tdfx_devclass,
427 if(tdfx_info->busy == 0) return EBADF;
430 printf("Closed by #%d\n", td->td_proc->p_pid);
436 tdfx_mmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
439 * mmap(2) is called by a user process to request that an area of memory
440 * associated with this device be mapped for the process to work with. Nprot
441 * holds the protections requested, PROT_READ, PROT_WRITE, or both.
444 /**** OLD GET CONFIG ****/
445 /* struct tdfx_softc* tdfx_info; */
447 /* Get the configuration for our card XXX*/
448 /*tdfx_info = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass,
450 /************************/
452 struct tdfx_softc* tdfx_info[2];
454 tdfx_info[0] = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass, 0);
456 /* If, for some reason, its not configured, we bail out */
457 if(tdfx_info[0] == NULL) {
459 printf("tdfx: tdfx_info (softc) is NULL\n");
464 /* We must stay within the bound of our address space */
465 if((offset & 0xff000000) == tdfx_info[0]->addr0) {
467 *paddr = rman_get_start(tdfx_info[0]->memrange) + offset;
472 tdfx_info[1] = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass, 1);
473 if((offset & 0xff000000) == tdfx_info[1]->addr0) {
475 *paddr = rman_get_start(tdfx_info[1]->memrange) +
481 /* See if the Banshee/V3 LFB is being requested */
482 /*if(tdfx_info->memrange2 != NULL && (offset & 0xff000000) ==
485 return atop(rman_get_start(tdfx_info[1]->memrange2) + offset);
486 }*/ /* VoodooNG code */
489 /* atop -> address to page
490 * rman_get_start, get the (struct resource*)->r_start member,
491 * the mapping base address.
497 tdfx_query_boards(void) {
499 * This returns the number of installed tdfx cards, we have been keeping
500 * count, look at tdfx_attach
506 tdfx_query_fetch(u_int cmd, struct tdfx_pio_data *piod)
508 /* XXX Comment this later, after careful inspection and spring cleaning :) */
509 /* Various return values 8bit-32bit */
513 struct tdfx_softc* tdfx_info = NULL;
515 /* This one depend on the tdfx_* structs being properly initialized */
517 /*piod->device &= 0xf;*/
518 if((piod == NULL) ||(tdfx_count <= piod->device) ||
519 (piod->device < 0)) {
521 printf("tdfx: Bad device or internal struct in tdfx_query_fetch\n");
526 tdfx_info = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass,
529 if(tdfx_info == NULL) return -ENXIO;
531 /* We must restrict the size reads from the port, since to high or low of a
532 * size witll result in wrong data being passed, and that's bad */
533 /* A few of these were pulled during the attach phase */
535 case PCI_VENDOR_ID_FREEBSD:
536 if(piod->size != 2) return -EINVAL;
537 copyout(&tdfx_info->vendor, piod->value, piod->size);
539 case PCI_DEVICE_ID_FREEBSD:
540 if(piod->size != 2) return -EINVAL;
541 copyout(&tdfx_info->type, piod->value, piod->size);
543 case PCI_BASE_ADDRESS_0_FREEBSD:
544 if(piod->size != 4) return -EINVAL;
545 copyout(&tdfx_info->addr0, piod->value, piod->size);
547 case PCI_BASE_ADDRESS_1_FREEBSD:
548 if(piod->size != 4) return -EINVAL;
549 copyout(&tdfx_info->addr1, piod->value, piod->size);
551 case PCI_PRIBUS_FREEBSD:
552 if(piod->size != 1) return -EINVAL;
554 case PCI_IOBASE_0_FREEBSD:
555 if(piod->size != 2) return -EINVAL;
557 case PCI_IOLIMIT_0_FREEBSD:
558 if(piod->size != 2) return -EINVAL;
560 case SST1_PCI_SPECIAL1_FREEBSD:
561 if(piod->size != 4) return -EINVAL;
563 case PCI_REVISION_ID_FREEBSD:
564 if(piod->size != 1) return -EINVAL;
566 case SST1_PCI_SPECIAL4_FREEBSD:
567 if(piod->size != 4) return -EINVAL;
574 /* Read the value and return */
577 ret_byte = pci_read_config(tdfx_info[piod->device].dev,
579 copyout(&ret_byte, piod->value, 1);
582 ret_word = pci_read_config(tdfx_info[piod->device].dev,
584 copyout(&ret_word, piod->value, 2);
587 ret_dword = pci_read_config(tdfx_info[piod->device].dev,
589 copyout(&ret_dword, piod->value, 4);
598 tdfx_query_update(u_int cmd, struct tdfx_pio_data *piod)
600 /* XXX Comment this later, after careful inspection and spring cleaning :) */
606 /* Port vals, mask */
607 u_int32_t retval, preval, mask;
608 struct tdfx_softc* tdfx_info = NULL;
611 if((piod == NULL) || (piod->device >= (tdfx_count &
614 printf("tdfx: Bad struct or device in tdfx_query_update\n");
619 tdfx_info = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass,
621 if(tdfx_info == NULL) return -ENXIO;
622 /* Code below this line in the fuction was taken from the
623 * Linux driver and converted for freebsd. */
625 /* Check the size for all the ports, to make sure stuff doesn't get messed up
626 * by poorly written clients */
629 case PCI_COMMAND_FREEBSD:
630 if(piod->size != 2) return -EINVAL;
632 case SST1_PCI_SPECIAL1_FREEBSD:
633 if(piod->size != 4) return -EINVAL;
635 case SST1_PCI_SPECIAL2_FREEBSD:
636 if(piod->size != 4) return -EINVAL;
638 case SST1_PCI_SPECIAL3_FREEBSD:
639 if(piod->size != 4) return -EINVAL;
641 case SST1_PCI_SPECIAL4_FREEBSD:
642 if(piod->size != 4) return -EINVAL;
647 /* Read the current value */
648 retval = pci_read_config(tdfx_info->dev, piod->port & ~3, 4);
650 /* These set up a mask to use, since apparently they wanted to write 4 bytes
651 * at once to the ports */
652 switch (piod->size) {
654 copyin(piod->value, &ret_byte, 1);
655 preval = ret_byte << (8 * (piod->port & 0x3));
656 mask = 0xff << (8 * (piod->port & 0x3));
659 copyin(piod->value, &ret_word, 2);
660 preval = ret_word << (8 * (piod->port & 0x3));
661 mask = 0xffff << (8 * (piod->port & 0x3));
664 copyin(piod->value, &ret_dword, 4);
671 /* Finally, combine the values and write it to the port */
672 retval = (retval & ~mask) | preval;
673 pci_write_config(tdfx_info->dev, piod->port & ~3, retval, 4);
678 /* For both of these, I added a variable named workport of type u_int so
679 * that I could eliminate the warning about my data type size. The
680 * applications expect the port to be of type short, so I needed to change
681 * this within the function */
683 tdfx_do_pio_rd(struct tdfx_pio_data *piod)
688 struct tdfx_softc *tdfx_info =
689 (struct tdfx_softc*)devclass_get_softc(tdfx_devclass, piod->device);
691 /* Restricts the access of ports other than those we use */
692 if(((piod->port != VGA_INPUT_STATUS_1C) || (piod->port != SC_INDEX) ||
693 (piod->port != SC_DATA) || (piod->port != VGA_MISC_OUTPUT_READ)) &&
694 (piod->port < tdfx_info->pio0) && (piod->port > tdfx_info->pio0max))
697 /* All VGA STATUS REGS are byte registers, size should never be > 1 */
698 if(piod->size != 1) {
702 /* Write the data to the intended port */
703 workport = piod->port;
704 ret_byte = inb(workport);
705 copyout(&ret_byte, piod->value, sizeof(u_int8_t));
710 tdfx_do_pio_wt(struct tdfx_pio_data *piod)
715 struct tdfx_softc *tdfx_info = (struct
716 tdfx_softc*)devclass_get_softc(tdfx_devclass, piod->device);
717 /* Replace old switch w/ massive if(...) */
718 /* Restricts the access of ports other than those we use */
719 if(((piod->port != SC_INDEX) && (piod->port != SC_DATA) &&
720 (piod->port != VGA_MISC_OUTPUT_READ)) /* Can't write VGA_ST_1C */ &&
721 (piod->port < tdfx_info->pio0) && (piod->port > tdfx_info->pio0max))
724 /* All VGA STATUS REGS are byte registers, size should never be > 1 */
725 if(piod->size != 1) {
729 /* Write the data to the intended port */
730 copyin(piod->value, &ret_byte, sizeof(u_int8_t));
731 workport = piod->port;
732 outb(workport, ret_byte);
737 tdfx_do_query(u_int cmd, struct tdfx_pio_data *piod)
739 /* There are three sub-commands to the query 0x33 */
740 switch(_IOC_NR(cmd)) {
742 return tdfx_query_boards();
745 return tdfx_query_fetch(cmd, piod);
748 return tdfx_query_update(cmd, piod);
751 /* In case we are thrown a bogus sub-command! */
753 printf("Bad Sub-cmd: 0x%x\n", _IOC_NR(cmd));
760 tdfx_do_pio(u_int cmd, struct tdfx_pio_data *piod)
762 /* Two types of PIO, INPUT and OUTPUT, as the name suggests */
763 switch(_IOC_DIR(cmd)) {
765 return tdfx_do_pio_rd(piod);
768 return tdfx_do_pio_wt(piod);
775 /* Calls to ioctl(2) eventually end up here. Unhandled ioctls return an ENXIO,
776 * normally, you would read in the data pointed to by data, then write your
777 * output to it. The ioctl *should* normally return zero if everything is
778 * alright, but 3dfx didn't make it that way...
780 * For all of the ioctl code, in the event of a real error,
781 * we return -Exxxx rather than simply Exxxx. The reason for this
782 * is that the ioctls actually RET information back to the program
783 * sometimes, rather than filling it in the passed structure. We
784 * want to distinguish errors from useful data, and maintain compatibility.
786 * There is this portion of the proc struct called p_retval[], we can store a
787 * return value in td->td_retval[0] and place the return value if it is positive
788 * in there, then we can return 0 (good). If the return value is negative, we
789 * can return -retval and the error should be properly handled.
792 tdfx_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
795 struct tdfx_pio_data *piod = (struct tdfx_pio_data*)data;
797 printf("IOCTL'd by #%d, cmd: 0x%x, data: %p\n", td->td_proc->p_pid, (u_int32_t)cmd,
800 switch(_IOC_TYPE(cmd)) {
801 /* Return the real error if negative, or simply stick the valid return
802 * in td->td_retval */
804 /* The '3'(0x33) type IOCTL is for querying the installed cards */
805 if((retval = tdfx_do_query(cmd, piod)) > 0) td->td_retval[0] = retval;
809 /* The 0 type IOCTL is for programmed I/O methods */
810 if((tdfx_do_pio(cmd, piod)) > 0) td->td_retval[0] = retval;
814 /* Technically, we won't reach this from linux emu, but when glide
815 * finally gets ported, watch out! */
817 printf("Bad IOCTL from #%d\n", td->td_proc->p_pid);
827 * Linux emulation IOCTL for /dev/tdfx
830 linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args)
833 u_long cmd = args->cmd & 0xffff;
835 /* The structure passed to ioctl has two shorts, one int
837 char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)];
841 if ((error = fget(td, args->fd, &fp)) != 0)
843 /* We simply copy the data and send it right to ioctl */
844 copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio));
845 error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td);
849 #endif /* TDFX_LINUX */
852 /* This is the device driver struct. This is sent to the driver subsystem to
853 * register the method structure and the info strcut space for this particular
854 * instance of the driver.
856 static driver_t tdfx_driver = {
859 sizeof(struct tdfx_softc),
862 /* Tell Mr. Kernel about us! */
863 DRIVER_MODULE(tdfx, pci, tdfx_driver, tdfx_devclass, 0, 0);