Attachment 49237 Details for Bug 75251 – ati-agp.diff

[patch] ati-agp.diff

ati-agp.diff (text/plain), 10.44 KB, created by Eric Anholt on 2004-12-19 06:40:23 UTC

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Creator: Eric Anholt

Created: 2004-12-19 06:40:23 UTC

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obsolete

>Index: agp_ati.c
>===================================================================
>RCS file: agp_ati.c
>diff -N agp_ati.c
>--- /dev/null	1 Jan 1970 00:00:00 -0000
>+++ agp_ati.c	19 Dec 2004 06:24:51 -0000
>@@ -0,0 +1,365 @@
>+/*-
>+ * Copyright (c) 2004 Eric Anholt
>+ * All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
>+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
>+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
>+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
>+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
>+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
>+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
>+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
>+ * SUCH DAMAGE.
>+ *
>+ * Based on reading the Linux 2.6.8.1 driver by Dave Jones.
>+ */
>+
>+#include <sys/cdefs.h>
>+__FBSDID("$FreeBSD$");
>+
>+#include "opt_bus.h"
>+
>+#include <sys/param.h>
>+#include <sys/systm.h>
>+#include <sys/malloc.h>
>+#include <sys/kernel.h>
>+#include <sys/module.h>
>+#include <sys/bus.h>
>+#include <sys/lock.h>
>+#include <sys/mutex.h>
>+#include <sys/proc.h>
>+
>+#include <dev/pci/pcivar.h>
>+#include <dev/pci/pcireg.h>
>+#include <pci/agppriv.h>
>+#include <pci/agpreg.h>
>+
>+#include <vm/vm.h>
>+#include <vm/vm_object.h>
>+#include <vm/pmap.h>
>+#include <machine/bus.h>
>+#include <machine/resource.h>
>+#include <sys/rman.h>
>+
>+MALLOC_DECLARE(M_AGP);
>+
>+#define READ4(off)	bus_space_read_4(sc->bst, sc->bsh, off)
>+#define WRITE4(off,v)	bus_space_write_4(sc->bst, sc->bsh, off, v)
>+
>+struct agp_ati_softc {
>+	struct agp_softc agp;
>+	struct resource *regs;	/* memory mapped control registers */
>+	bus_space_tag_t bst;	/* bus_space tag */
>+	bus_space_handle_t bsh;	/* bus_space handle */
>+	u_int32_t	initial_aperture; /* aperture size at startup */
>+	char		is_rs300;
>+
>+	/* The GATT */
>+	u_int32_t	ag_entries;
>+	u_int32_t      *ag_virtual;	/* virtual address of gatt */
>+	u_int32_t      *ag_vdir;	/* virtual address of page dir */
>+	vm_offset_t	ag_pdir;	/* physical address of page dir */
>+};
>+
>+
>+static const char*
>+agp_ati_match(device_t dev)
>+{
>+	if (pci_get_class(dev) != PCIC_BRIDGE
>+	    || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
>+		return NULL;
>+
>+	if (agp_find_caps(dev) == 0)
>+		return NULL;
>+
>+	switch (pci_get_devid(dev)) {
>+	case 0xcab01002:
>+		return ("ATI RS100 AGP bridge");
>+	case 0xcab21002:
>+		return ("ATI RS200 AGP bridge");
>+	case 0xcab31002:
>+		return ("ATI RS250 AGP bridge");
>+	case 0x58301002:
>+		return ("ATI RS300_100 AGP bridge");
>+	case 0x58311002:
>+		return ("ATI RS300_133 AGP bridge");
>+	case 0x58321002:
>+		return ("ATI RS300_166 AGP bridge");
>+	case 0x58331002:
>+		return ("ATI RS300_200 AGP bridge");
>+	};
>+
>+	return NULL;
>+}
>+
>+static int
>+agp_ati_probe(device_t dev)
>+{
>+	const char *desc;
>+
>+	desc = agp_ati_match(dev);
>+	if (desc) {
>+		device_verbose(dev);
>+		device_set_desc(dev, desc);
>+		return 0;
>+	}
>+
>+	return ENXIO;
>+}
>+
>+static int
>+agp_ati_alloc_gatt(device_t dev)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+	u_int32_t apsize = AGP_GET_APERTURE(dev);
>+	u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
>+	int i;
>+
>+	/* Alloc the GATT -- pointers to pages of AGP memory */
>+	sc->ag_entries = entries;
>+	sc->ag_virtual = malloc(entries * sizeof(u_int32_t), M_AGP,
>+	    M_NOWAIT | M_ZERO);
>+	if (sc->ag_virtual == NULL) {
>+		if (bootverbose)
>+			device_printf(dev, "aperture allocation failed\n");
>+		return ENOMEM;
>+	}
>+
>+	/* Alloc the page directory -- pointers to each page of the GATT */
>+	sc->ag_vdir = malloc(AGP_PAGE_SIZE, M_AGP, M_NOWAIT | M_ZERO);
>+	if (sc->ag_vdir == NULL) {
>+		if (bootverbose)
>+			device_printf(dev, "pagedir allocation failed\n");
>+		free(sc->ag_virtual, M_AGP);
>+		return ENOMEM;
>+	}
>+	sc->ag_pdir = vtophys((vm_offset_t)sc->ag_vdir);
>+
>+	/* Fill in the pagedir's pointers to GATT pages */
>+	for (i = 0; i < sc->ag_entries / 1024; i++) {
>+		vm_offset_t va;
>+		vm_offset_t pa;
>+
>+		va = ((vm_offset_t)sc->ag_virtual) + i * AGP_PAGE_SIZE;
>+		pa = vtophys(va);
>+		sc->ag_vdir[i] = pa | 1;
>+	}
>+
>+	/*
>+	 * Make sure the chipset can see everything.
>+	 */
>+	agp_flush_cache();
>+
>+	return 0;
>+}
>+
>+
>+static int
>+agp_ati_attach(device_t dev)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+	int error, rid;
>+	u_int32_t temp;
>+	
>+	error = agp_generic_attach(dev);
>+	if (error)
>+		return error;
>+
>+	switch (pci_get_devid(dev)) {
>+	case 0xcab01002: /* ATI RS100 AGP bridge */
>+	case 0xcab21002: /*ATI RS200 AGP bridge  */
>+	case 0xcab31002: /* ATI RS250 AGP bridge */
>+		sc->is_rs300 = 0;
>+	case 0x58301002: /* ATI RS300_100 AGP bridge */
>+	case 0x58311002: /* ATI RS300_133 AGP bridge */
>+	case 0x58321002: /* ATI RS300_166 AGP bridge */
>+	case 0x58331002: /* ATI RS300_200 AGP bridge */
>+		sc->is_rs300 = 1;
>+	default:
>+		/* Unknown chipset */
>+		return EINVAL;
>+	};
>+
>+	rid = ATI_GART_MMADDR;
>+	sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
>+	if (!sc->regs) {
>+		agp_generic_detach(dev);
>+		return ENOMEM;
>+	}
>+
>+	sc->bst = rman_get_bustag(sc->regs);
>+	sc->bsh = rman_get_bushandle(sc->regs);
>+
>+	sc->initial_aperture = AGP_GET_APERTURE(dev);
>+
>+	for (;;) {
>+		if (agp_ati_alloc_gatt(dev) == 0)
>+			break;
>+
>+		/*
>+		 * Probably contigmalloc failure. Try reducing the
>+		 * aperture so that the gatt size reduces.
>+		 */
>+		if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2))
>+			return ENOMEM;
>+	}
>+
>+	if (sc->is_rs300)
>+		pci_write_config(dev, ATI_RS300_IG_AGPMODE, 0x20000, 4);
>+	else
>+		pci_write_config(dev, ATI_RS100_IG_AGPMODE, 0x20000, 4);
>+
>+	WRITE4(ATI_GART_FEATURE_ID, 0x00060000);
>+
>+	temp = pci_read_config(dev, 4, 4);	/* XXX: Magic reg# */
>+	pci_write_config(dev, 4, temp | (1 << 14), 4);
>+
>+	WRITE4(ATI_GART_BASE, sc->ag_pdir);
>+
>+	AGP_FLUSH_TLB(dev);
>+
>+	return 0;
>+}
>+
>+static int
>+agp_ati_detach(device_t dev)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+	int error;
>+
>+	error = agp_generic_detach(dev);
>+	if (error)
>+		return error;
>+
>+	/* Clear the GATT base */
>+	WRITE4(ATI_GART_BASE, 0);
>+
>+	/* Put the aperture back the way it started. */
>+	AGP_SET_APERTURE(dev, sc->initial_aperture);
>+	
>+	free(sc->ag_vdir, M_AGP);
>+	free(sc->ag_virtual, M_AGP);
>+
>+	bus_release_resource(dev, SYS_RES_MEMORY, ATI_GART_MMADDR, sc->regs);
>+
>+	return 0;
>+}
>+
>+static u_int32_t
>+agp_ati_get_aperture(device_t dev)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+	int size_value;
>+	
>+	if (sc->is_rs300)
>+		size_value = pci_read_config(dev, ATI_RS300_APSIZE, 4);
>+	else
>+		size_value = pci_read_config(dev, ATI_RS100_APSIZE, 4);
>+
>+	size_value = (size_value & 0x0000000e) >> 1;
>+	size_value = (32 * 1024 * 1024) << size_value;
>+
>+	return size_value;
>+}
>+
>+static int
>+agp_ati_set_aperture(device_t dev, u_int32_t aperture)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+	int size_value;
>+
>+	if (sc->is_rs300)
>+		size_value = pci_read_config(dev, ATI_RS300_APSIZE, 4);
>+	else
>+		size_value = pci_read_config(dev, ATI_RS100_APSIZE, 4);
>+
>+	size_value &= ~0x0000000e;
>+	size_value |= (ffs(aperture / (32 * 1024 * 1024)) - 1) << 1;
>+
>+	return 0;
>+}
>+
>+static int
>+agp_ati_bind_page(device_t dev, int offset, vm_offset_t physical)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+
>+	if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
>+		return EINVAL;
>+
>+	sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
>+
>+	/* invalidate the cache */
>+	AGP_FLUSH_TLB(dev);
>+	return 0;
>+}
>+
>+static int
>+agp_ati_unbind_page(device_t dev, int offset)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+
>+	if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
>+		return EINVAL;
>+
>+	sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
>+	AGP_FLUSH_TLB(dev);	/* XXX: Shouldn't other drivers be doing this? */
>+	return 0;
>+}
>+
>+static void
>+agp_ati_flush_tlb(device_t dev)
>+{
>+	struct agp_ati_softc *sc = device_get_softc(dev);
>+
>+	/* Set the cache invalidate bit and wait for the chipset to clear */
>+	WRITE4(ATI_GART_CACHE_CNTRL, 1);
>+}
>+
>+static device_method_t agp_ati_methods[] = {
>+	/* Device interface */
>+	DEVMETHOD(device_probe,		agp_ati_probe),
>+	DEVMETHOD(device_attach,	agp_ati_attach),
>+	DEVMETHOD(device_detach,	agp_ati_detach),
>+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
>+	DEVMETHOD(device_suspend,	bus_generic_suspend),
>+	DEVMETHOD(device_resume,	bus_generic_resume),
>+
>+	/* AGP interface */
>+	DEVMETHOD(agp_get_aperture,	agp_ati_get_aperture),
>+	DEVMETHOD(agp_set_aperture,	agp_ati_set_aperture),
>+	DEVMETHOD(agp_bind_page,	agp_ati_bind_page),
>+	DEVMETHOD(agp_unbind_page,	agp_ati_unbind_page),
>+	DEVMETHOD(agp_flush_tlb,	agp_ati_flush_tlb),
>+	DEVMETHOD(agp_enable,		agp_generic_enable),
>+	DEVMETHOD(agp_alloc_memory,	agp_generic_alloc_memory),
>+	DEVMETHOD(agp_free_memory,	agp_generic_free_memory),
>+	DEVMETHOD(agp_bind_memory,	agp_generic_bind_memory),
>+	DEVMETHOD(agp_unbind_memory,	agp_generic_unbind_memory),
>+
>+	{ 0, 0 }
>+};
>+
>+static driver_t agp_ati_driver = {
>+	"agp",
>+	agp_ati_methods,
>+	sizeof(struct agp_ati_softc),
>+};
>+
>+static devclass_t agp_devclass;
>+
>+DRIVER_MODULE(agp_ati, pci, agp_ati_driver, agp_devclass, 0, 0);
>+MODULE_DEPEND(agp_ati, agp, 1, 1, 1);
>+MODULE_DEPEND(agp_ati, pci, 1, 1, 1);
>Index: agpreg.h
>===================================================================
>RCS file: /home/ncvs/src/sys/pci/agpreg.h,v
>retrieving revision 1.13
>diff -u -r1.13 agpreg.h
>--- agpreg.h	16 Aug 2004 12:25:48 -0000	1.13
>+++ agpreg.h	19 Dec 2004 06:22:26 -0000
>@@ -262,4 +262,16 @@
> #define	AGP_AMD64_CACHECTRL_INVGART	0x00000001
> #define	AGP_AMD64_CACHECTRL_PTEERR	0x00000002
> 
>+/*
>+ * ATI IGP registers
>+ */
>+#define ATI_GART_MMADDR		0x14
>+#define ATI_RS100_APSIZE	0xac
>+#define ATI_RS100_IG_AGPMODE	0xb0
>+#define ATI_RS300_APSIZE	0xf8
>+#define ATI_RS300_IG_AGPMODE	0xfc
>+#define ATI_GART_FEATURE_ID	0x00
>+#define ATI_GART_BASE		0x04
>+#define ATI_GART_CACHE_CNTRL	0x0c
>+
> #endif /* !_PCI_AGPREG_H_ */

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Attachments on bug 75251: 49237 | 49238