xref: /freebsd/sys/dev/agp/agp_sis.c (revision f4078c527f7988ffa3ad6bb8123ae0073ee66bc1)
159747216SDoug Rabson /*-
259747216SDoug Rabson  * Copyright (c) 2000 Doug Rabson
359747216SDoug Rabson  * All rights reserved.
459747216SDoug Rabson  *
559747216SDoug Rabson  * Redistribution and use in source and binary forms, with or without
659747216SDoug Rabson  * modification, are permitted provided that the following conditions
759747216SDoug Rabson  * are met:
859747216SDoug Rabson  * 1. Redistributions of source code must retain the above copyright
959747216SDoug Rabson  *    notice, this list of conditions and the following disclaimer.
1059747216SDoug Rabson  * 2. Redistributions in binary form must reproduce the above copyright
1159747216SDoug Rabson  *    notice, this list of conditions and the following disclaimer in the
1259747216SDoug Rabson  *    documentation and/or other materials provided with the distribution.
1359747216SDoug Rabson  *
1459747216SDoug Rabson  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1559747216SDoug Rabson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1659747216SDoug Rabson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1759747216SDoug Rabson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1859747216SDoug Rabson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1959747216SDoug Rabson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2059747216SDoug Rabson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2159747216SDoug Rabson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2259747216SDoug Rabson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2359747216SDoug Rabson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2459747216SDoug Rabson  * SUCH DAMAGE.
2559747216SDoug Rabson  */
2659747216SDoug Rabson 
27f4636c59SDavid E. O'Brien #include <sys/cdefs.h>
28f4636c59SDavid E. O'Brien __FBSDID("$FreeBSD$");
29f4636c59SDavid E. O'Brien 
3059747216SDoug Rabson #include "opt_bus.h"
3159747216SDoug Rabson 
3259747216SDoug Rabson #include <sys/param.h>
3359747216SDoug Rabson #include <sys/systm.h>
3459747216SDoug Rabson #include <sys/malloc.h>
3559747216SDoug Rabson #include <sys/kernel.h>
3659747216SDoug Rabson #include <sys/bus.h>
3759747216SDoug Rabson #include <sys/lock.h>
387e9e7dc4SBruce Evans #include <sys/lockmgr.h>
3923955314SAlfred Perlstein #include <sys/mutex.h>
4052b3919dSJohn Baldwin #include <sys/proc.h>
4159747216SDoug Rabson 
4219b7ffd1SWarner Losh #include <dev/pci/pcivar.h>
4319b7ffd1SWarner Losh #include <dev/pci/pcireg.h>
4459747216SDoug Rabson #include <pci/agppriv.h>
4559747216SDoug Rabson #include <pci/agpreg.h>
4659747216SDoug Rabson 
4759747216SDoug Rabson #include <vm/vm.h>
4859747216SDoug Rabson #include <vm/vm_object.h>
4959747216SDoug Rabson #include <vm/pmap.h>
5059747216SDoug Rabson 
5159747216SDoug Rabson struct agp_sis_softc {
5259747216SDoug Rabson 	struct agp_softc agp;
5359747216SDoug Rabson 	u_int32_t	initial_aperture; /* aperture size at startup */
5459747216SDoug Rabson 	struct agp_gatt *gatt;
5559747216SDoug Rabson };
5659747216SDoug Rabson 
5759747216SDoug Rabson static const char*
5859747216SDoug Rabson agp_sis_match(device_t dev)
5959747216SDoug Rabson {
6059747216SDoug Rabson 	if (pci_get_class(dev) != PCIC_BRIDGE
6159747216SDoug Rabson 	    || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
6259747216SDoug Rabson 		return NULL;
6359747216SDoug Rabson 
6459747216SDoug Rabson 	if (agp_find_caps(dev) == 0)
6559747216SDoug Rabson 		return NULL;
6659747216SDoug Rabson 
6759747216SDoug Rabson 	switch (pci_get_devid(dev)) {
6859747216SDoug Rabson 	case 0x00011039:
6959747216SDoug Rabson 		return ("SiS 5591 host to AGP bridge");
70f4078c52SEric Anholt 	case 0x05301039:
71f4078c52SEric Anholt 		return ("SiS 530 host to AGP bridge");
72f4078c52SEric Anholt 	case 0x05401039:
73f4078c52SEric Anholt 		return ("SiS 540 host to AGP bridge");
74f4078c52SEric Anholt 	case 0x05501039:
75f4078c52SEric Anholt 		return ("SiS 550 host to AGP bridge");
76f4078c52SEric Anholt 	case 0x06201039:
77f4078c52SEric Anholt 		return ("SiS 620 host to AGP bridge");
78f4078c52SEric Anholt 	case 0x06301039:
79f4078c52SEric Anholt 		return ("SiS 630 host to AGP bridge");
80f4078c52SEric Anholt 	case 0x06451039:
81f4078c52SEric Anholt 		return ("SiS 645 host to AGP bridge");
82f4078c52SEric Anholt 	case 0x06461039:
83f4078c52SEric Anholt 		return ("SiS 645DX host to AGP bridge");
8464eca1e1SSøren Schmidt 	case 0x06481039:
8564eca1e1SSøren Schmidt 		return ("SiS 648 host to AGP bridge");
86f4078c52SEric Anholt 	case 0x06501039:
87f4078c52SEric Anholt 		return ("SiS 650 host to AGP bridge");
88f4078c52SEric Anholt 	case 0x06511039:
89f4078c52SEric Anholt 		return ("SiS 651 host to AGP bridge");
90f4078c52SEric Anholt 	case 0x06551039:
91f4078c52SEric Anholt 		return ("SiS 655 host to AGP bridge");
92f4078c52SEric Anholt 	case 0x06611039:
93f4078c52SEric Anholt 		return ("SiS 661 host to AGP bridge");
94f4078c52SEric Anholt 	case 0x07301039:
95f4078c52SEric Anholt 		return ("SiS 730 host to AGP bridge");
96f4078c52SEric Anholt 	case 0x07351039:
97f4078c52SEric Anholt 		return ("SiS 735 host to AGP bridge");
98f4078c52SEric Anholt 	case 0x07401039:
99f4078c52SEric Anholt 		return ("SiS 740 host to AGP bridge");
100f4078c52SEric Anholt 	case 0x07411039:
101f4078c52SEric Anholt 		return ("SiS 741 host to AGP bridge");
102f4078c52SEric Anholt 	case 0x07451039:
103f4078c52SEric Anholt 		return ("SiS 745 host to AGP bridge");
104f4078c52SEric Anholt 	case 0x07461039:
105f4078c52SEric Anholt 		return ("SiS 746 host to AGP bridge");
106f4078c52SEric Anholt 	case 0x07601039:
107f4078c52SEric Anholt 		return ("SiS 760 host to AGP bridge");
10859747216SDoug Rabson 	};
10959747216SDoug Rabson 
11059747216SDoug Rabson 	if (pci_get_vendor(dev) == 0x1039)
11159747216SDoug Rabson 		return ("SIS Generic host to PCI bridge");
11259747216SDoug Rabson 
11359747216SDoug Rabson 	return NULL;
11459747216SDoug Rabson }
11559747216SDoug Rabson 
11659747216SDoug Rabson static int
11759747216SDoug Rabson agp_sis_probe(device_t dev)
11859747216SDoug Rabson {
11959747216SDoug Rabson 	const char *desc;
12059747216SDoug Rabson 
12125128fccSNate Lawson 	if (resource_disabled("agp", device_get_unit(dev)))
12225128fccSNate Lawson 		return (ENXIO);
12359747216SDoug Rabson 	desc = agp_sis_match(dev);
12459747216SDoug Rabson 	if (desc) {
12559747216SDoug Rabson 		device_verbose(dev);
12659747216SDoug Rabson 		device_set_desc(dev, desc);
12759747216SDoug Rabson 		return 0;
12859747216SDoug Rabson 	}
12959747216SDoug Rabson 
13059747216SDoug Rabson 	return ENXIO;
13159747216SDoug Rabson }
13259747216SDoug Rabson 
13359747216SDoug Rabson static int
13459747216SDoug Rabson agp_sis_attach(device_t dev)
13559747216SDoug Rabson {
13659747216SDoug Rabson 	struct agp_sis_softc *sc = device_get_softc(dev);
13759747216SDoug Rabson 	struct agp_gatt *gatt;
13859747216SDoug Rabson 	int error;
13959747216SDoug Rabson 
14059747216SDoug Rabson 	error = agp_generic_attach(dev);
14159747216SDoug Rabson 	if (error)
14259747216SDoug Rabson 		return error;
14359747216SDoug Rabson 
14459747216SDoug Rabson 	sc->initial_aperture = AGP_GET_APERTURE(dev);
14559747216SDoug Rabson 
14659747216SDoug Rabson 	for (;;) {
14759747216SDoug Rabson 		gatt = agp_alloc_gatt(dev);
14859747216SDoug Rabson 		if (gatt)
14959747216SDoug Rabson 			break;
15059747216SDoug Rabson 
15159747216SDoug Rabson 		/*
15259747216SDoug Rabson 		 * Probably contigmalloc failure. Try reducing the
15359747216SDoug Rabson 		 * aperture so that the gatt size reduces.
15459747216SDoug Rabson 		 */
15559747216SDoug Rabson 		if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
15659747216SDoug Rabson 			agp_generic_detach(dev);
15759747216SDoug Rabson 			return ENOMEM;
15859747216SDoug Rabson 		}
15959747216SDoug Rabson 	}
16059747216SDoug Rabson 	sc->gatt = gatt;
16159747216SDoug Rabson 
16259747216SDoug Rabson 	/* Install the gatt. */
16359747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4);
16459747216SDoug Rabson 
16559747216SDoug Rabson 	/* Enable the aperture. */
16659747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_WINCTRL,
16759747216SDoug Rabson 			 pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1);
16859747216SDoug Rabson 
16959747216SDoug Rabson 	/*
17059747216SDoug Rabson 	 * Enable the TLB and make it automatically invalidate entries
17159747216SDoug Rabson 	 * when the GATT is written.
17259747216SDoug Rabson 	 */
17359747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1);
17459747216SDoug Rabson 
17559747216SDoug Rabson 	return 0;
17659747216SDoug Rabson }
17759747216SDoug Rabson 
17859747216SDoug Rabson static int
17959747216SDoug Rabson agp_sis_detach(device_t dev)
18059747216SDoug Rabson {
18159747216SDoug Rabson 	struct agp_sis_softc *sc = device_get_softc(dev);
18259747216SDoug Rabson 	int error;
18359747216SDoug Rabson 
18459747216SDoug Rabson 	error = agp_generic_detach(dev);
18559747216SDoug Rabson 	if (error)
18659747216SDoug Rabson 		return error;
18759747216SDoug Rabson 
18859747216SDoug Rabson 	/* Disable the aperture.. */
18959747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_WINCTRL,
19059747216SDoug Rabson 			 pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1);
19159747216SDoug Rabson 
19259747216SDoug Rabson 	/* and the TLB. */
19359747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1);
19459747216SDoug Rabson 
19559747216SDoug Rabson 	/* Put the aperture back the way it started. */
19659747216SDoug Rabson 	AGP_SET_APERTURE(dev, sc->initial_aperture);
19759747216SDoug Rabson 
19859747216SDoug Rabson 	agp_free_gatt(sc->gatt);
19959747216SDoug Rabson 	return 0;
20059747216SDoug Rabson }
20159747216SDoug Rabson 
20259747216SDoug Rabson static u_int32_t
20359747216SDoug Rabson agp_sis_get_aperture(device_t dev)
20459747216SDoug Rabson {
20559747216SDoug Rabson 	int gws;
20659747216SDoug Rabson 
20759747216SDoug Rabson 	/*
20859747216SDoug Rabson 	 * The aperture size is equal to 4M<<gws.
20959747216SDoug Rabson 	 */
21059747216SDoug Rabson 	gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4;
21159747216SDoug Rabson 	return (4*1024*1024) << gws;
21259747216SDoug Rabson }
21359747216SDoug Rabson 
21459747216SDoug Rabson static int
21559747216SDoug Rabson agp_sis_set_aperture(device_t dev, u_int32_t aperture)
21659747216SDoug Rabson {
21759747216SDoug Rabson 	int gws;
21859747216SDoug Rabson 
21959747216SDoug Rabson 	/*
22059747216SDoug Rabson 	 * Check for a power of two and make sure its within the
22159747216SDoug Rabson 	 * programmable range.
22259747216SDoug Rabson 	 */
22359747216SDoug Rabson 	if (aperture & (aperture - 1)
22459747216SDoug Rabson 	    || aperture < 4*1024*1024
22559747216SDoug Rabson 	    || aperture > 256*1024*1024)
22659747216SDoug Rabson 		return EINVAL;
22759747216SDoug Rabson 
22859747216SDoug Rabson 	gws = ffs(aperture / 4*1024*1024) - 1;
22959747216SDoug Rabson 
23059747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_WINCTRL,
23159747216SDoug Rabson 			 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70)
23259747216SDoug Rabson 			  | gws << 4), 1);
23359747216SDoug Rabson 
23459747216SDoug Rabson 	return 0;
23559747216SDoug Rabson }
23659747216SDoug Rabson 
23759747216SDoug Rabson static int
23859747216SDoug Rabson agp_sis_bind_page(device_t dev, int offset, vm_offset_t physical)
23959747216SDoug Rabson {
24059747216SDoug Rabson 	struct agp_sis_softc *sc = device_get_softc(dev);
24159747216SDoug Rabson 
24259747216SDoug Rabson 	if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
24359747216SDoug Rabson 		return EINVAL;
24459747216SDoug Rabson 
24559747216SDoug Rabson 	sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
24659747216SDoug Rabson 	return 0;
24759747216SDoug Rabson }
24859747216SDoug Rabson 
24959747216SDoug Rabson static int
25059747216SDoug Rabson agp_sis_unbind_page(device_t dev, int offset)
25159747216SDoug Rabson {
25259747216SDoug Rabson 	struct agp_sis_softc *sc = device_get_softc(dev);
25359747216SDoug Rabson 
25459747216SDoug Rabson 	if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
25559747216SDoug Rabson 		return EINVAL;
25659747216SDoug Rabson 
25759747216SDoug Rabson 	sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
25859747216SDoug Rabson 	return 0;
25959747216SDoug Rabson }
26059747216SDoug Rabson 
26159747216SDoug Rabson static void
26259747216SDoug Rabson agp_sis_flush_tlb(device_t dev)
26359747216SDoug Rabson {
26459747216SDoug Rabson 	pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1);
26559747216SDoug Rabson }
26659747216SDoug Rabson 
26759747216SDoug Rabson static device_method_t agp_sis_methods[] = {
26859747216SDoug Rabson 	/* Device interface */
26959747216SDoug Rabson 	DEVMETHOD(device_probe,		agp_sis_probe),
27059747216SDoug Rabson 	DEVMETHOD(device_attach,	agp_sis_attach),
27159747216SDoug Rabson 	DEVMETHOD(device_detach,	agp_sis_detach),
27259747216SDoug Rabson 	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
27359747216SDoug Rabson 	DEVMETHOD(device_suspend,	bus_generic_suspend),
27459747216SDoug Rabson 	DEVMETHOD(device_resume,	bus_generic_resume),
27559747216SDoug Rabson 
27659747216SDoug Rabson 	/* AGP interface */
27759747216SDoug Rabson 	DEVMETHOD(agp_get_aperture,	agp_sis_get_aperture),
27859747216SDoug Rabson 	DEVMETHOD(agp_set_aperture,	agp_sis_set_aperture),
27959747216SDoug Rabson 	DEVMETHOD(agp_bind_page,	agp_sis_bind_page),
28059747216SDoug Rabson 	DEVMETHOD(agp_unbind_page,	agp_sis_unbind_page),
28159747216SDoug Rabson 	DEVMETHOD(agp_flush_tlb,	agp_sis_flush_tlb),
28259747216SDoug Rabson 	DEVMETHOD(agp_enable,		agp_generic_enable),
28359747216SDoug Rabson 	DEVMETHOD(agp_alloc_memory,	agp_generic_alloc_memory),
28459747216SDoug Rabson 	DEVMETHOD(agp_free_memory,	agp_generic_free_memory),
28559747216SDoug Rabson 	DEVMETHOD(agp_bind_memory,	agp_generic_bind_memory),
28659747216SDoug Rabson 	DEVMETHOD(agp_unbind_memory,	agp_generic_unbind_memory),
28759747216SDoug Rabson 
28859747216SDoug Rabson 	{ 0, 0 }
28959747216SDoug Rabson };
29059747216SDoug Rabson 
29159747216SDoug Rabson static driver_t agp_sis_driver = {
29259747216SDoug Rabson 	"agp",
29359747216SDoug Rabson 	agp_sis_methods,
29459747216SDoug Rabson 	sizeof(struct agp_sis_softc),
29559747216SDoug Rabson };
29659747216SDoug Rabson 
29759747216SDoug Rabson static devclass_t agp_devclass;
29859747216SDoug Rabson 
29959747216SDoug Rabson DRIVER_MODULE(agp_sis, pci, agp_sis_driver, agp_devclass, 0, 0);
300f246e4a1SMatthew N. Dodd MODULE_DEPEND(agp_sis, agp, 1, 1, 1);
301f246e4a1SMatthew N. Dodd MODULE_DEPEND(agp_sis, pci, 1, 1, 1);
302