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freebsd-dev/sys/dev/agp/agp_i810.c
Jean-Sébastien Pédron 85a60a7756 agp: Do not attach to Intel GEN6+ 
The i915 video driver doesn't depend on agp(4) anymore for Sandybridge
and later GPUs. Therefore, there is no need to attach agp(4) to those
devices.

While here, fix `agp_i965_res_spec` to include the aperture base for
GEN4 and GEN5.

Reviewed by:	kib
Approved by:	kib
Differential Revision:	https://reviews.freebsd.org/D5586
2016-03-12 09:44:23 +00:00

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/*-
* Copyright (c) 2000 Doug Rabson
* Copyright (c) 2000 Ruslan Ermilov
* Copyright (c) 2011 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by Konstantin Belousov
* under sponsorship from the FreeBSD Foundation.
*
* 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.
*/
/*
* Fixes for 830/845G support: David Dawes <dawes@xfree86.org>
* 852GM/855GM/865G support added by David Dawes <dawes@xfree86.org>
*
* This is generic Intel GTT handling code, morphed from the AGP
* bridge code.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if 0
#define KTR_AGP_I810 KTR_DEV
#else
#define KTR_AGP_I810 0
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/rwlock.h>
#include <dev/agp/agppriv.h>
#include <dev/agp/agpreg.h>
#include <dev/agp/agp_i810.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/md_var.h>
#include <sys/rman.h>
MALLOC_DECLARE(M_AGP);
struct agp_i810_match;
static int agp_i810_check_active(device_t bridge_dev);
static int agp_i830_check_active(device_t bridge_dev);
static int agp_i915_check_active(device_t bridge_dev);
static void agp_82852_set_desc(device_t dev,
const struct agp_i810_match *match);
static void agp_i810_set_desc(device_t dev, const struct agp_i810_match *match);
static void agp_i810_dump_regs(device_t dev);
static void agp_i830_dump_regs(device_t dev);
static void agp_i855_dump_regs(device_t dev);
static void agp_i915_dump_regs(device_t dev);
static void agp_i965_dump_regs(device_t dev);
static int agp_i810_get_stolen_size(device_t dev);
static int agp_i830_get_stolen_size(device_t dev);
static int agp_i915_get_stolen_size(device_t dev);
static int agp_i810_get_gtt_mappable_entries(device_t dev);
static int agp_i830_get_gtt_mappable_entries(device_t dev);
static int agp_i915_get_gtt_mappable_entries(device_t dev);
static int agp_i810_get_gtt_total_entries(device_t dev);
static int agp_i965_get_gtt_total_entries(device_t dev);
static int agp_gen5_get_gtt_total_entries(device_t dev);
static int agp_i810_install_gatt(device_t dev);
static int agp_i830_install_gatt(device_t dev);
static int agp_i965_install_gatt(device_t dev);
static int agp_g4x_install_gatt(device_t dev);
static void agp_i810_deinstall_gatt(device_t dev);
static void agp_i830_deinstall_gatt(device_t dev);
static void agp_i810_install_gtt_pte(device_t dev, u_int index,
vm_offset_t physical, int flags);
static void agp_i830_install_gtt_pte(device_t dev, u_int index,
vm_offset_t physical, int flags);
static void agp_i915_install_gtt_pte(device_t dev, u_int index,
vm_offset_t physical, int flags);
static void agp_i965_install_gtt_pte(device_t dev, u_int index,
vm_offset_t physical, int flags);
static void agp_g4x_install_gtt_pte(device_t dev, u_int index,
vm_offset_t physical, int flags);
static void agp_i810_write_gtt(device_t dev, u_int index, uint32_t pte);
static void agp_i915_write_gtt(device_t dev, u_int index, uint32_t pte);
static void agp_i965_write_gtt(device_t dev, u_int index, uint32_t pte);
static void agp_g4x_write_gtt(device_t dev, u_int index, uint32_t pte);
static u_int32_t agp_i810_read_gtt_pte(device_t dev, u_int index);
static u_int32_t agp_i915_read_gtt_pte(device_t dev, u_int index);
static u_int32_t agp_i965_read_gtt_pte(device_t dev, u_int index);
static u_int32_t agp_g4x_read_gtt_pte(device_t dev, u_int index);
static vm_paddr_t agp_i810_read_gtt_pte_paddr(device_t dev, u_int index);
static vm_paddr_t agp_i915_read_gtt_pte_paddr(device_t dev, u_int index);
static int agp_i810_set_aperture(device_t dev, u_int32_t aperture);
static int agp_i830_set_aperture(device_t dev, u_int32_t aperture);
static int agp_i915_set_aperture(device_t dev, u_int32_t aperture);
static int agp_i810_chipset_flush_setup(device_t dev);
static int agp_i915_chipset_flush_setup(device_t dev);
static int agp_i965_chipset_flush_setup(device_t dev);
static void agp_i810_chipset_flush_teardown(device_t dev);
static void agp_i915_chipset_flush_teardown(device_t dev);
static void agp_i965_chipset_flush_teardown(device_t dev);
static void agp_i810_chipset_flush(device_t dev);
static void agp_i830_chipset_flush(device_t dev);
static void agp_i915_chipset_flush(device_t dev);
enum {
CHIP_I810, /* i810/i815 */
CHIP_I830, /* 830M/845G */
CHIP_I855, /* 852GM/855GM/865G */
CHIP_I915, /* 915G/915GM */
CHIP_I965, /* G965 */
CHIP_G33, /* G33/Q33/Q35 */
CHIP_IGD, /* Pineview */
CHIP_G4X, /* G45/Q45 */
};
/* The i810 through i855 have the registers at BAR 1, and the GATT gets
* allocated by us. The i915 has registers in BAR 0 and the GATT is at the
* start of the stolen memory, and should only be accessed by the OS through
* BAR 3. The G965 has registers and GATT in the same BAR (0) -- first 512KB
* is registers, second 512KB is GATT.
*/
static struct resource_spec agp_i810_res_spec[] = {
{ SYS_RES_MEMORY, AGP_I810_MMADR, RF_ACTIVE | RF_SHAREABLE },
{ -1, 0 }
};
static struct resource_spec agp_i915_res_spec[] = {
{ SYS_RES_MEMORY, AGP_I915_MMADR, RF_ACTIVE | RF_SHAREABLE },
{ SYS_RES_MEMORY, AGP_I915_GTTADR, RF_ACTIVE | RF_SHAREABLE },
{ -1, 0 }
};
static struct resource_spec agp_i965_res_spec[] = {
{ SYS_RES_MEMORY, AGP_I965_GTTMMADR, RF_ACTIVE | RF_SHAREABLE },
{ SYS_RES_MEMORY, AGP_I965_APBASE, RF_ACTIVE | RF_SHAREABLE },
{ -1, 0 }
};
struct agp_i810_softc {
struct agp_softc agp;
u_int32_t initial_aperture; /* aperture size at startup */
struct agp_gatt *gatt;
u_int32_t dcache_size; /* i810 only */
u_int32_t stolen; /* number of i830/845 gtt
entries for stolen memory */
u_int stolen_size; /* BIOS-reserved graphics memory */
u_int gtt_total_entries; /* Total number of gtt ptes */
u_int gtt_mappable_entries; /* Number of gtt ptes mappable by CPU */
device_t bdev; /* bridge device */
void *argb_cursor; /* contigmalloc area for ARGB cursor */
struct resource *sc_res[2];
const struct agp_i810_match *match;
int sc_flush_page_rid;
struct resource *sc_flush_page_res;
void *sc_flush_page_vaddr;
int sc_bios_allocated_flush_page;
};
static device_t intel_agp;
struct agp_i810_driver {
int chiptype;
int gen;
int busdma_addr_mask_sz;
struct resource_spec *res_spec;
int (*check_active)(device_t);
void (*set_desc)(device_t, const struct agp_i810_match *);
void (*dump_regs)(device_t);
int (*get_stolen_size)(device_t);
int (*get_gtt_total_entries)(device_t);
int (*get_gtt_mappable_entries)(device_t);
int (*install_gatt)(device_t);
void (*deinstall_gatt)(device_t);
void (*write_gtt)(device_t, u_int, uint32_t);
void (*install_gtt_pte)(device_t, u_int, vm_offset_t, int);
u_int32_t (*read_gtt_pte)(device_t, u_int);
vm_paddr_t (*read_gtt_pte_paddr)(device_t , u_int);
int (*set_aperture)(device_t, u_int32_t);
int (*chipset_flush_setup)(device_t);
void (*chipset_flush_teardown)(device_t);
void (*chipset_flush)(device_t);
};
static struct {
struct intel_gtt base;
} intel_private;
static const struct agp_i810_driver agp_i810_i810_driver = {
.chiptype = CHIP_I810,
.gen = 1,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i810_res_spec,
.check_active = agp_i810_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i810_dump_regs,
.get_stolen_size = agp_i810_get_stolen_size,
.get_gtt_mappable_entries = agp_i810_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i810_install_gatt,
.deinstall_gatt = agp_i810_deinstall_gatt,
.write_gtt = agp_i810_write_gtt,
.install_gtt_pte = agp_i810_install_gtt_pte,
.read_gtt_pte = agp_i810_read_gtt_pte,
.read_gtt_pte_paddr = agp_i810_read_gtt_pte_paddr,
.set_aperture = agp_i810_set_aperture,
.chipset_flush_setup = agp_i810_chipset_flush_setup,
.chipset_flush_teardown = agp_i810_chipset_flush_teardown,
.chipset_flush = agp_i810_chipset_flush,
};
static const struct agp_i810_driver agp_i810_i815_driver = {
.chiptype = CHIP_I810,
.gen = 2,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i810_res_spec,
.check_active = agp_i810_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i810_dump_regs,
.get_stolen_size = agp_i810_get_stolen_size,
.get_gtt_mappable_entries = agp_i830_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i810_install_gatt,
.deinstall_gatt = agp_i810_deinstall_gatt,
.write_gtt = agp_i810_write_gtt,
.install_gtt_pte = agp_i810_install_gtt_pte,
.read_gtt_pte = agp_i810_read_gtt_pte,
.read_gtt_pte_paddr = agp_i810_read_gtt_pte_paddr,
.set_aperture = agp_i810_set_aperture,
.chipset_flush_setup = agp_i810_chipset_flush_setup,
.chipset_flush_teardown = agp_i810_chipset_flush_teardown,
.chipset_flush = agp_i830_chipset_flush,
};
static const struct agp_i810_driver agp_i810_i830_driver = {
.chiptype = CHIP_I830,
.gen = 2,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i810_res_spec,
.check_active = agp_i830_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i830_dump_regs,
.get_stolen_size = agp_i830_get_stolen_size,
.get_gtt_mappable_entries = agp_i830_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i810_write_gtt,
.install_gtt_pte = agp_i830_install_gtt_pte,
.read_gtt_pte = agp_i810_read_gtt_pte,
.read_gtt_pte_paddr = agp_i810_read_gtt_pte_paddr,
.set_aperture = agp_i830_set_aperture,
.chipset_flush_setup = agp_i810_chipset_flush_setup,
.chipset_flush_teardown = agp_i810_chipset_flush_teardown,
.chipset_flush = agp_i830_chipset_flush,
};
static const struct agp_i810_driver agp_i810_i855_driver = {
.chiptype = CHIP_I855,
.gen = 2,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i810_res_spec,
.check_active = agp_i830_check_active,
.set_desc = agp_82852_set_desc,
.dump_regs = agp_i855_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i810_write_gtt,
.install_gtt_pte = agp_i830_install_gtt_pte,
.read_gtt_pte = agp_i810_read_gtt_pte,
.read_gtt_pte_paddr = agp_i810_read_gtt_pte_paddr,
.set_aperture = agp_i830_set_aperture,
.chipset_flush_setup = agp_i810_chipset_flush_setup,
.chipset_flush_teardown = agp_i810_chipset_flush_teardown,
.chipset_flush = agp_i830_chipset_flush,
};
static const struct agp_i810_driver agp_i810_i865_driver = {
.chiptype = CHIP_I855,
.gen = 2,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i810_res_spec,
.check_active = agp_i830_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i855_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i810_write_gtt,
.install_gtt_pte = agp_i830_install_gtt_pte,
.read_gtt_pte = agp_i810_read_gtt_pte,
.read_gtt_pte_paddr = agp_i810_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i810_chipset_flush_setup,
.chipset_flush_teardown = agp_i810_chipset_flush_teardown,
.chipset_flush = agp_i830_chipset_flush,
};
static const struct agp_i810_driver agp_i810_i915_driver = {
.chiptype = CHIP_I915,
.gen = 3,
.busdma_addr_mask_sz = 32,
.res_spec = agp_i915_res_spec,
.check_active = agp_i915_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i915_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i810_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i915_write_gtt,
.install_gtt_pte = agp_i915_install_gtt_pte,
.read_gtt_pte = agp_i915_read_gtt_pte,
.read_gtt_pte_paddr = agp_i915_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i915_chipset_flush_setup,
.chipset_flush_teardown = agp_i915_chipset_flush_teardown,
.chipset_flush = agp_i915_chipset_flush,
};
static const struct agp_i810_driver agp_i810_g33_driver = {
.chiptype = CHIP_G33,
.gen = 3,
.busdma_addr_mask_sz = 36,
.res_spec = agp_i915_res_spec,
.check_active = agp_i915_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i965_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i965_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i915_write_gtt,
.install_gtt_pte = agp_i915_install_gtt_pte,
.read_gtt_pte = agp_i915_read_gtt_pte,
.read_gtt_pte_paddr = agp_i915_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i965_chipset_flush_setup,
.chipset_flush_teardown = agp_i965_chipset_flush_teardown,
.chipset_flush = agp_i915_chipset_flush,
};
static const struct agp_i810_driver agp_i810_igd_driver = {
.chiptype = CHIP_IGD,
.gen = 3,
.busdma_addr_mask_sz = 36,
.res_spec = agp_i915_res_spec,
.check_active = agp_i915_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i915_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i965_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i915_write_gtt,
.install_gtt_pte = agp_i915_install_gtt_pte,
.read_gtt_pte = agp_i915_read_gtt_pte,
.read_gtt_pte_paddr = agp_i915_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i965_chipset_flush_setup,
.chipset_flush_teardown = agp_i965_chipset_flush_teardown,
.chipset_flush = agp_i915_chipset_flush,
};
static const struct agp_i810_driver agp_i810_g965_driver = {
.chiptype = CHIP_I965,
.gen = 4,
.busdma_addr_mask_sz = 36,
.res_spec = agp_i965_res_spec,
.check_active = agp_i915_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i965_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_i965_get_gtt_total_entries,
.install_gatt = agp_i965_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_i965_write_gtt,
.install_gtt_pte = agp_i965_install_gtt_pte,
.read_gtt_pte = agp_i965_read_gtt_pte,
.read_gtt_pte_paddr = agp_i915_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i965_chipset_flush_setup,
.chipset_flush_teardown = agp_i965_chipset_flush_teardown,
.chipset_flush = agp_i915_chipset_flush,
};
static const struct agp_i810_driver agp_i810_g4x_driver = {
.chiptype = CHIP_G4X,
.gen = 5,
.busdma_addr_mask_sz = 36,
.res_spec = agp_i965_res_spec,
.check_active = agp_i915_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_i965_dump_regs,
.get_stolen_size = agp_i915_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_gen5_get_gtt_total_entries,
.install_gatt = agp_g4x_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_g4x_write_gtt,
.install_gtt_pte = agp_g4x_install_gtt_pte,
.read_gtt_pte = agp_g4x_read_gtt_pte,
.read_gtt_pte_paddr = agp_i915_read_gtt_pte_paddr,
.set_aperture = agp_i915_set_aperture,
.chipset_flush_setup = agp_i965_chipset_flush_setup,
.chipset_flush_teardown = agp_i965_chipset_flush_teardown,
.chipset_flush = agp_i915_chipset_flush,
};
/* For adding new devices, devid is the id of the graphics controller
* (pci:0:2:0, for example). The placeholder (usually at pci:0:2:1) for the
* second head should never be added. The bridge_offset is the offset to
* subtract from devid to get the id of the hostb that the device is on.
*/
static const struct agp_i810_match {
int devid;
char *name;
const struct agp_i810_driver *driver;
} agp_i810_matches[] = {
{
.devid = 0x71218086,
.name = "Intel 82810 (i810 GMCH) SVGA controller",
.driver = &agp_i810_i810_driver
},
{
.devid = 0x71238086,
.name = "Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller",
.driver = &agp_i810_i810_driver
},
{
.devid = 0x71258086,
.name = "Intel 82810E (i810E GMCH) SVGA controller",
.driver = &agp_i810_i810_driver
},
{
.devid = 0x11328086,
.name = "Intel 82815 (i815 GMCH) SVGA controller",
.driver = &agp_i810_i815_driver
},
{
.devid = 0x35778086,
.name = "Intel 82830M (830M GMCH) SVGA controller",
.driver = &agp_i810_i830_driver
},
{
.devid = 0x25628086,
.name = "Intel 82845M (845M GMCH) SVGA controller",
.driver = &agp_i810_i830_driver
},
{
.devid = 0x35828086,
.name = "Intel 82852/855GM SVGA controller",
.driver = &agp_i810_i855_driver
},
{
.devid = 0x25728086,
.name = "Intel 82865G (865G GMCH) SVGA controller",
.driver = &agp_i810_i865_driver
},
{
.devid = 0x25828086,
.name = "Intel 82915G (915G GMCH) SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x258A8086,
.name = "Intel E7221 SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x25928086,
.name = "Intel 82915GM (915GM GMCH) SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x27728086,
.name = "Intel 82945G (945G GMCH) SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x27A28086,
.name = "Intel 82945GM (945GM GMCH) SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x27AE8086,
.name = "Intel 945GME SVGA controller",
.driver = &agp_i810_i915_driver
},
{
.devid = 0x29728086,
.name = "Intel 946GZ SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x29828086,
.name = "Intel G965 SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x29928086,
.name = "Intel Q965 SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x29A28086,
.name = "Intel G965 SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x29B28086,
.name = "Intel Q35 SVGA controller",
.driver = &agp_i810_g33_driver
},
{
.devid = 0x29C28086,
.name = "Intel G33 SVGA controller",
.driver = &agp_i810_g33_driver
},
{
.devid = 0x29D28086,
.name = "Intel Q33 SVGA controller",
.driver = &agp_i810_g33_driver
},
{
.devid = 0xA0018086,
.name = "Intel Pineview SVGA controller",
.driver = &agp_i810_igd_driver
},
{
.devid = 0xA0118086,
.name = "Intel Pineview (M) SVGA controller",
.driver = &agp_i810_igd_driver
},
{
.devid = 0x2A028086,
.name = "Intel GM965 SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x2A128086,
.name = "Intel GME965 SVGA controller",
.driver = &agp_i810_g965_driver
},
{
.devid = 0x2A428086,
.name = "Intel GM45 SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x2E028086,
.name = "Intel Eaglelake SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x2E128086,
.name = "Intel Q45 SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x2E228086,
.name = "Intel G45 SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x2E328086,
.name = "Intel G41 SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x00428086,
.name = "Intel Ironlake (D) SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0x00468086,
.name = "Intel Ironlake (M) SVGA controller",
.driver = &agp_i810_g4x_driver
},
{
.devid = 0,
}
};
static const struct agp_i810_match*
agp_i810_match(device_t dev)
{
int i, devid;
if (pci_get_class(dev) != PCIC_DISPLAY
|| (pci_get_subclass(dev) != PCIS_DISPLAY_VGA &&
pci_get_subclass(dev) != PCIS_DISPLAY_OTHER))
return (NULL);
devid = pci_get_devid(dev);
for (i = 0; agp_i810_matches[i].devid != 0; i++) {
if (agp_i810_matches[i].devid == devid)
break;
}
if (agp_i810_matches[i].devid == 0)
return (NULL);
else
return (&agp_i810_matches[i]);
}
/*
* Find bridge device.
*/
static device_t
agp_i810_find_bridge(device_t dev)
{
return (pci_find_dbsf(0, 0, 0, 0));
}
static void
agp_i810_identify(driver_t *driver, device_t parent)
{
if (device_find_child(parent, "agp", -1) == NULL &&
agp_i810_match(parent))
device_add_child(parent, "agp", -1);
}
static int
agp_i810_check_active(device_t bridge_dev)
{
u_int8_t smram;
smram = pci_read_config(bridge_dev, AGP_I810_SMRAM, 1);
if ((smram & AGP_I810_SMRAM_GMS) == AGP_I810_SMRAM_GMS_DISABLED)
return (ENXIO);
return (0);
}
static int
agp_i830_check_active(device_t bridge_dev)
{
int gcc1;
gcc1 = pci_read_config(bridge_dev, AGP_I830_GCC1, 1);
if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED)
return (ENXIO);
return (0);
}
static int
agp_i915_check_active(device_t bridge_dev)
{
int deven;
deven = pci_read_config(bridge_dev, AGP_I915_DEVEN, 4);
if ((deven & AGP_I915_DEVEN_D2F0) == AGP_I915_DEVEN_D2F0_DISABLED)
return (ENXIO);
return (0);
}
static void
agp_82852_set_desc(device_t dev, const struct agp_i810_match *match)
{
switch (pci_read_config(dev, AGP_I85X_CAPID, 1)) {
case AGP_I855_GME:
device_set_desc(dev,
"Intel 82855GME (855GME GMCH) SVGA controller");
break;
case AGP_I855_GM:
device_set_desc(dev,
"Intel 82855GM (855GM GMCH) SVGA controller");
break;
case AGP_I852_GME:
device_set_desc(dev,
"Intel 82852GME (852GME GMCH) SVGA controller");
break;
case AGP_I852_GM:
device_set_desc(dev,
"Intel 82852GM (852GM GMCH) SVGA controller");
break;
default:
device_set_desc(dev,
"Intel 8285xM (85xGM GMCH) SVGA controller");
break;
}
}
static void
agp_i810_set_desc(device_t dev, const struct agp_i810_match *match)
{
device_set_desc(dev, match->name);
}
static int
agp_i810_probe(device_t dev)
{
device_t bdev;
const struct agp_i810_match *match;
int err;
if (resource_disabled("agp", device_get_unit(dev)))
return (ENXIO);
match = agp_i810_match(dev);
if (match == NULL)
return (ENXIO);
bdev = agp_i810_find_bridge(dev);
if (bdev == NULL) {
if (bootverbose)
printf("I810: can't find bridge device\n");
return (ENXIO);
}
/*
* checking whether internal graphics device has been activated.
*/
err = match->driver->check_active(bdev);
if (err != 0) {
if (bootverbose)
printf("i810: disabled, not probing\n");
return (err);
}
match->driver->set_desc(dev, match);
return (BUS_PROBE_DEFAULT);
}
static void
agp_i810_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_I810_PGTBL_CTL: %08x\n",
bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL));
device_printf(dev, "AGP_I810_MISCC: 0x%04x\n",
pci_read_config(sc->bdev, AGP_I810_MISCC, 2));
}
static void
agp_i830_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_I810_PGTBL_CTL: %08x\n",
bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL));
device_printf(dev, "AGP_I830_GCC1: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I830_GCC1, 1));
}
static void
agp_i855_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_I810_PGTBL_CTL: %08x\n",
bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL));
device_printf(dev, "AGP_I855_GCC1: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I855_GCC1, 1));
}
static void
agp_i915_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_I810_PGTBL_CTL: %08x\n",
bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL));
device_printf(dev, "AGP_I855_GCC1: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I855_GCC1, 1));
device_printf(dev, "AGP_I915_MSAC: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I915_MSAC, 1));
}
static void
agp_i965_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_I965_PGTBL_CTL2: %08x\n",
bus_read_4(sc->sc_res[0], AGP_I965_PGTBL_CTL2));
device_printf(dev, "AGP_I855_GCC1: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I855_GCC1, 1));
device_printf(dev, "AGP_I965_MSAC: 0x%02x\n",
pci_read_config(sc->bdev, AGP_I965_MSAC, 1));
}
static int
agp_i810_get_stolen_size(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
sc->stolen = 0;
sc->stolen_size = 0;
return (0);
}
static int
agp_i830_get_stolen_size(device_t dev)
{
struct agp_i810_softc *sc;
unsigned int gcc1;
sc = device_get_softc(dev);
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1);
switch (gcc1 & AGP_I830_GCC1_GMS) {
case AGP_I830_GCC1_GMS_STOLEN_512:
sc->stolen = (512 - 132) * 1024 / 4096;
sc->stolen_size = 512 * 1024;
break;
case AGP_I830_GCC1_GMS_STOLEN_1024:
sc->stolen = (1024 - 132) * 1024 / 4096;
sc->stolen_size = 1024 * 1024;
break;
case AGP_I830_GCC1_GMS_STOLEN_8192:
sc->stolen = (8192 - 132) * 1024 / 4096;
sc->stolen_size = 8192 * 1024;
break;
default:
sc->stolen = 0;
device_printf(dev,
"unknown memory configuration, disabling (GCC1 %x)\n",
gcc1);
return (EINVAL);
}
return (0);
}
static int
agp_i915_get_stolen_size(device_t dev)
{
struct agp_i810_softc *sc;
unsigned int gcc1, stolen, gtt_size;
sc = device_get_softc(dev);
/*
* Stolen memory is set up at the beginning of the aperture by
* the BIOS, consisting of the GATT followed by 4kb for the
* BIOS display.
*/
switch (sc->match->driver->chiptype) {
case CHIP_I855:
gtt_size = 128;
break;
case CHIP_I915:
gtt_size = 256;
break;
case CHIP_I965:
switch (bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL) &
AGP_I810_PGTBL_SIZE_MASK) {
case AGP_I810_PGTBL_SIZE_128KB:
gtt_size = 128;
break;
case AGP_I810_PGTBL_SIZE_256KB:
gtt_size = 256;
break;
case AGP_I810_PGTBL_SIZE_512KB:
gtt_size = 512;
break;
case AGP_I965_PGTBL_SIZE_1MB:
gtt_size = 1024;
break;
case AGP_I965_PGTBL_SIZE_2MB:
gtt_size = 2048;
break;
case AGP_I965_PGTBL_SIZE_1_5MB:
gtt_size = 1024 + 512;
break;
default:
device_printf(dev, "Bad PGTBL size\n");
return (EINVAL);
}
break;
case CHIP_G33:
gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 2);
switch (gcc1 & AGP_G33_MGGC_GGMS_MASK) {
case AGP_G33_MGGC_GGMS_SIZE_1M:
gtt_size = 1024;
break;
case AGP_G33_MGGC_GGMS_SIZE_2M:
gtt_size = 2048;
break;
default:
device_printf(dev, "Bad PGTBL size\n");
return (EINVAL);
}
break;
case CHIP_IGD:
case CHIP_G4X:
gtt_size = 0;
break;
default:
device_printf(dev, "Bad chiptype\n");
return (EINVAL);
}
/* GCC1 is called MGGC on i915+ */
gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1);
switch (gcc1 & AGP_I855_GCC1_GMS) {
case AGP_I855_GCC1_GMS_STOLEN_1M:
stolen = 1024;
break;
case AGP_I855_GCC1_GMS_STOLEN_4M:
stolen = 4 * 1024;
break;
case AGP_I855_GCC1_GMS_STOLEN_8M:
stolen = 8 * 1024;
break;
case AGP_I855_GCC1_GMS_STOLEN_16M:
stolen = 16 * 1024;
break;
case AGP_I855_GCC1_GMS_STOLEN_32M:
stolen = 32 * 1024;
break;
case AGP_I915_GCC1_GMS_STOLEN_48M:
stolen = sc->match->driver->gen > 2 ? 48 * 1024 : 0;
break;
case AGP_I915_GCC1_GMS_STOLEN_64M:
stolen = sc->match->driver->gen > 2 ? 64 * 1024 : 0;
break;
case AGP_G33_GCC1_GMS_STOLEN_128M:
stolen = sc->match->driver->gen > 2 ? 128 * 1024 : 0;
break;
case AGP_G33_GCC1_GMS_STOLEN_256M:
stolen = sc->match->driver->gen > 2 ? 256 * 1024 : 0;
break;
case AGP_G4X_GCC1_GMS_STOLEN_96M:
if (sc->match->driver->chiptype == CHIP_I965 ||
sc->match->driver->chiptype == CHIP_G4X)
stolen = 96 * 1024;
else
stolen = 0;
break;
case AGP_G4X_GCC1_GMS_STOLEN_160M:
if (sc->match->driver->chiptype == CHIP_I965 ||
sc->match->driver->chiptype == CHIP_G4X)
stolen = 160 * 1024;
else
stolen = 0;
break;
case AGP_G4X_GCC1_GMS_STOLEN_224M:
if (sc->match->driver->chiptype == CHIP_I965 ||
sc->match->driver->chiptype == CHIP_G4X)
stolen = 224 * 1024;
else
stolen = 0;
break;
case AGP_G4X_GCC1_GMS_STOLEN_352M:
if (sc->match->driver->chiptype == CHIP_I965 ||
sc->match->driver->chiptype == CHIP_G4X)
stolen = 352 * 1024;
else
stolen = 0;
break;
default:
device_printf(dev,
"unknown memory configuration, disabling (GCC1 %x)\n",
gcc1);
return (EINVAL);
}
gtt_size += 4;
sc->stolen_size = stolen * 1024;
sc->stolen = (stolen - gtt_size) * 1024 / 4096;
return (0);
}
static int
agp_i810_get_gtt_mappable_entries(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t ap;
uint16_t miscc;
sc = device_get_softc(dev);
miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2);
if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32)
ap = 32;
else
ap = 64;
sc->gtt_mappable_entries = (ap * 1024 * 1024) >> AGP_PAGE_SHIFT;
return (0);
}
static int
agp_i830_get_gtt_mappable_entries(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t ap;
uint16_t gmch_ctl;
sc = device_get_softc(dev);
gmch_ctl = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
if ((gmch_ctl & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64)
ap = 64;
else
ap = 128;
sc->gtt_mappable_entries = (ap * 1024 * 1024) >> AGP_PAGE_SHIFT;
return (0);
}
static int
agp_i915_get_gtt_mappable_entries(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t ap;
sc = device_get_softc(dev);
ap = AGP_GET_APERTURE(dev);
sc->gtt_mappable_entries = ap >> AGP_PAGE_SHIFT;
return (0);
}
static int
agp_i810_get_gtt_total_entries(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
sc->gtt_total_entries = sc->gtt_mappable_entries;
return (0);
}
static int
agp_i965_get_gtt_total_entries(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t pgetbl_ctl;
int error;
sc = device_get_softc(dev);
error = 0;
pgetbl_ctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
switch (pgetbl_ctl & AGP_I810_PGTBL_SIZE_MASK) {
case AGP_I810_PGTBL_SIZE_128KB:
sc->gtt_total_entries = 128 * 1024 / 4;
break;
case AGP_I810_PGTBL_SIZE_256KB:
sc->gtt_total_entries = 256 * 1024 / 4;
break;
case AGP_I810_PGTBL_SIZE_512KB:
sc->gtt_total_entries = 512 * 1024 / 4;
break;
/* GTT pagetable sizes bigger than 512KB are not possible on G33! */
case AGP_I810_PGTBL_SIZE_1MB:
sc->gtt_total_entries = 1024 * 1024 / 4;
break;
case AGP_I810_PGTBL_SIZE_2MB:
sc->gtt_total_entries = 2 * 1024 * 1024 / 4;
break;
case AGP_I810_PGTBL_SIZE_1_5MB:
sc->gtt_total_entries = (1024 + 512) * 1024 / 4;
break;
default:
device_printf(dev, "Unknown page table size\n");
error = ENXIO;
}
return (error);
}
static void
agp_gen5_adjust_pgtbl_size(device_t dev, uint32_t sz)
{
struct agp_i810_softc *sc;
uint32_t pgetbl_ctl, pgetbl_ctl2;
sc = device_get_softc(dev);
/* Disable per-process page table. */
pgetbl_ctl2 = bus_read_4(sc->sc_res[0], AGP_I965_PGTBL_CTL2);
pgetbl_ctl2 &= ~AGP_I810_PGTBL_ENABLED;
bus_write_4(sc->sc_res[0], AGP_I965_PGTBL_CTL2, pgetbl_ctl2);
/* Write the new ggtt size. */
pgetbl_ctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
pgetbl_ctl &= ~AGP_I810_PGTBL_SIZE_MASK;
pgetbl_ctl |= sz;
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgetbl_ctl);
}
static int
agp_gen5_get_gtt_total_entries(device_t dev)
{
struct agp_i810_softc *sc;
uint16_t gcc1;
sc = device_get_softc(dev);
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
switch (gcc1 & AGP_G4x_GCC1_SIZE_MASK) {
case AGP_G4x_GCC1_SIZE_1M:
case AGP_G4x_GCC1_SIZE_VT_1M:
agp_gen5_adjust_pgtbl_size(dev, AGP_I810_PGTBL_SIZE_1MB);
break;
case AGP_G4x_GCC1_SIZE_VT_1_5M:
agp_gen5_adjust_pgtbl_size(dev, AGP_I810_PGTBL_SIZE_1_5MB);
break;
case AGP_G4x_GCC1_SIZE_2M:
case AGP_G4x_GCC1_SIZE_VT_2M:
agp_gen5_adjust_pgtbl_size(dev, AGP_I810_PGTBL_SIZE_2MB);
break;
default:
device_printf(dev, "Unknown page table size\n");
return (ENXIO);
}
return (agp_i965_get_gtt_total_entries(dev));
}
static int
agp_i810_install_gatt(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
/* Some i810s have on-chip memory called dcache. */
if ((bus_read_1(sc->sc_res[0], AGP_I810_DRT) & AGP_I810_DRT_POPULATED)
!= 0)
sc->dcache_size = 4 * 1024 * 1024;
else
sc->dcache_size = 0;
/* According to the specs the gatt on the i810 must be 64k. */
sc->gatt->ag_virtual = (void *)kmem_alloc_contig(kernel_arena,
64 * 1024, M_NOWAIT | M_ZERO, 0, ~0, PAGE_SIZE,
0, VM_MEMATTR_WRITE_COMBINING);
if (sc->gatt->ag_virtual == NULL) {
if (bootverbose)
device_printf(dev, "contiguous allocation failed\n");
return (ENOMEM);
}
sc->gatt->ag_physical = vtophys((vm_offset_t)sc->gatt->ag_virtual);
/* Install the GATT. */
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL,
sc->gatt->ag_physical | 1);
return (0);
}
static void
agp_i830_install_gatt_init(struct agp_i810_softc *sc)
{
uint32_t pgtblctl;
/*
* The i830 automatically initializes the 128k gatt on boot.
* GATT address is already in there, make sure it's enabled.
*/
pgtblctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
pgtblctl |= 1;
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl);
sc->gatt->ag_physical = pgtblctl & ~1;
}
static int
agp_i830_install_gatt(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
agp_i830_install_gatt_init(sc);
return (0);
}
static int
agp_gen4_install_gatt(device_t dev, const vm_size_t gtt_offset)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
pmap_change_attr((vm_offset_t)rman_get_virtual(sc->sc_res[0]) +
gtt_offset, rman_get_size(sc->sc_res[0]) - gtt_offset,
VM_MEMATTR_WRITE_COMBINING);
agp_i830_install_gatt_init(sc);
return (0);
}
static int
agp_i965_install_gatt(device_t dev)
{
return (agp_gen4_install_gatt(dev, 512 * 1024));
}
static int
agp_g4x_install_gatt(device_t dev)
{
return (agp_gen4_install_gatt(dev, 2 * 1024 * 1024));
}
static int
agp_i810_attach(device_t dev)
{
struct agp_i810_softc *sc;
int error;
sc = device_get_softc(dev);
sc->bdev = agp_i810_find_bridge(dev);
if (sc->bdev == NULL)
return (ENOENT);
sc->match = agp_i810_match(dev);
agp_set_aperture_resource(dev, sc->match->driver->gen <= 2 ?
AGP_APBASE : AGP_I915_GMADR);
error = agp_generic_attach(dev);
if (error)
return (error);
if (ptoa((vm_paddr_t)Maxmem) >
(1ULL << sc->match->driver->busdma_addr_mask_sz) - 1) {
device_printf(dev, "agp_i810 does not support physical "
"memory above %ju.\n", (uintmax_t)(1ULL <<
sc->match->driver->busdma_addr_mask_sz) - 1);
return (ENOENT);
}
if (bus_alloc_resources(dev, sc->match->driver->res_spec, sc->sc_res)) {
agp_generic_detach(dev);
return (ENODEV);
}
sc->initial_aperture = AGP_GET_APERTURE(dev);
sc->gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_WAITOK);
sc->gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT;
if ((error = sc->match->driver->get_stolen_size(dev)) != 0 ||
(error = sc->match->driver->install_gatt(dev)) != 0 ||
(error = sc->match->driver->get_gtt_mappable_entries(dev)) != 0 ||
(error = sc->match->driver->get_gtt_total_entries(dev)) != 0 ||
(error = sc->match->driver->chipset_flush_setup(dev)) != 0) {
bus_release_resources(dev, sc->match->driver->res_spec,
sc->sc_res);
free(sc->gatt, M_AGP);
agp_generic_detach(dev);
return (error);
}
intel_agp = dev;
device_printf(dev, "aperture size is %dM",
sc->initial_aperture / 1024 / 1024);
if (sc->stolen > 0)
printf(", detected %dk stolen memory\n", sc->stolen * 4);
else
printf("\n");
if (bootverbose) {
sc->match->driver->dump_regs(dev);
device_printf(dev, "Mappable GTT entries: %d\n",
sc->gtt_mappable_entries);
device_printf(dev, "Total GTT entries: %d\n",
sc->gtt_total_entries);
}
return (0);
}
static void
agp_i810_deinstall_gatt(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, 0);
kmem_free(kernel_arena, (vm_offset_t)sc->gatt->ag_virtual, 64 * 1024);
}
static void
agp_i830_deinstall_gatt(device_t dev)
{
struct agp_i810_softc *sc;
unsigned int pgtblctl;
sc = device_get_softc(dev);
pgtblctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
pgtblctl &= ~1;
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl);
}
static int
agp_i810_detach(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
agp_free_cdev(dev);
/* Clear the GATT base. */
sc->match->driver->deinstall_gatt(dev);
sc->match->driver->chipset_flush_teardown(dev);
/* Put the aperture back the way it started. */
AGP_SET_APERTURE(dev, sc->initial_aperture);
free(sc->gatt, M_AGP);
bus_release_resources(dev, sc->match->driver->res_spec, sc->sc_res);
agp_free_res(dev);
return (0);
}
static int
agp_i810_resume(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
AGP_SET_APERTURE(dev, sc->initial_aperture);
/* Install the GATT. */
bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL,
sc->gatt->ag_physical | 1);
return (bus_generic_resume(dev));
}
/**
* Sets the PCI resource size of the aperture on i830-class and below chipsets,
* while returning failure on later chipsets when an actual change is
* requested.
*
* This whole function is likely bogus, as the kernel would probably need to
* reconfigure the placement of the AGP aperture if a larger size is requested,
* which doesn't happen currently.
*/
static int
agp_i810_set_aperture(device_t dev, u_int32_t aperture)
{
struct agp_i810_softc *sc;
u_int16_t miscc;
sc = device_get_softc(dev);
/*
* Double check for sanity.
*/
if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) {
device_printf(dev, "bad aperture size %d\n", aperture);
return (EINVAL);
}
miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2);
miscc &= ~AGP_I810_MISCC_WINSIZE;
if (aperture == 32 * 1024 * 1024)
miscc |= AGP_I810_MISCC_WINSIZE_32;
else
miscc |= AGP_I810_MISCC_WINSIZE_64;
pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2);
return (0);
}
static int
agp_i830_set_aperture(device_t dev, u_int32_t aperture)
{
struct agp_i810_softc *sc;
u_int16_t gcc1;
sc = device_get_softc(dev);
if (aperture != 64 * 1024 * 1024 &&
aperture != 128 * 1024 * 1024) {
device_printf(dev, "bad aperture size %d\n", aperture);
return (EINVAL);
}
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
gcc1 &= ~AGP_I830_GCC1_GMASIZE;
if (aperture == 64 * 1024 * 1024)
gcc1 |= AGP_I830_GCC1_GMASIZE_64;
else
gcc1 |= AGP_I830_GCC1_GMASIZE_128;
pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2);
return (0);
}
static int
agp_i915_set_aperture(device_t dev, u_int32_t aperture)
{
return (agp_generic_set_aperture(dev, aperture));
}
static int
agp_i810_method_set_aperture(device_t dev, u_int32_t aperture)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
return (sc->match->driver->set_aperture(dev, aperture));
}
/**
* Writes a GTT entry mapping the page at the given offset from the
* beginning of the aperture to the given physical address. Setup the
* caching mode according to flags.
*
* For gen 1, 2 and 3, GTT start is located at AGP_I810_GTT offset
* from corresponding BAR start. For gen 4, offset is 512KB +
* AGP_I810_GTT, for gen 5 and 6 it is 2MB + AGP_I810_GTT.
*
* Also, the bits of the physical page address above 4GB needs to be
* placed into bits 40-32 of PTE.
*/
static void
agp_i810_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
if (flags == AGP_DCACHE_MEMORY)
pte |= I810_PTE_LOCAL;
else if (flags == AGP_USER_CACHED_MEMORY)
pte |= I830_PTE_SYSTEM_CACHED;
agp_i810_write_gtt(dev, index, pte);
}
static void
agp_i810_write_gtt(device_t dev, u_int index, uint32_t pte)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->sc_res[0], AGP_I810_GTT + index * 4, pte);
CTR2(KTR_AGP_I810, "810_pte %x %x", index, pte);
}
static void
agp_i830_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
if (flags == AGP_USER_CACHED_MEMORY)
pte |= I830_PTE_SYSTEM_CACHED;
agp_i810_write_gtt(dev, index, pte);
}
static void
agp_i915_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
if (flags == AGP_USER_CACHED_MEMORY)
pte |= I830_PTE_SYSTEM_CACHED;
pte |= (physical & 0x0000000f00000000ull) >> 28;
agp_i915_write_gtt(dev, index, pte);
}
static void
agp_i915_write_gtt(device_t dev, u_int index, uint32_t pte)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->sc_res[1], index * 4, pte);
CTR2(KTR_AGP_I810, "915_pte %x %x", index, pte);
}
static void
agp_i965_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
if (flags == AGP_USER_CACHED_MEMORY)
pte |= I830_PTE_SYSTEM_CACHED;
pte |= (physical & 0x0000000f00000000ull) >> 28;
agp_i965_write_gtt(dev, index, pte);
}
static void
agp_i965_write_gtt(device_t dev, u_int index, uint32_t pte)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->sc_res[0], index * 4 + (512 * 1024), pte);
CTR2(KTR_AGP_I810, "965_pte %x %x", index, pte);
}
static void
agp_g4x_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
if (flags == AGP_USER_CACHED_MEMORY)
pte |= I830_PTE_SYSTEM_CACHED;
pte |= (physical & 0x0000000f00000000ull) >> 28;
agp_g4x_write_gtt(dev, index, pte);
}
static void
agp_g4x_write_gtt(device_t dev, u_int index, uint32_t pte)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->sc_res[0], index * 4 + (2 * 1024 * 1024), pte);
CTR2(KTR_AGP_I810, "g4x_pte %x %x", index, pte);
}
static int
agp_i810_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
{
struct agp_i810_softc *sc = device_get_softc(dev);
u_int index;
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
device_printf(dev, "failed: offset is 0x%08jx, "
"shift is %d, entries is %d\n", (intmax_t)offset,
AGP_PAGE_SHIFT, sc->gatt->ag_entries);
return (EINVAL);
}
index = offset >> AGP_PAGE_SHIFT;
if (sc->stolen != 0 && index < sc->stolen) {
device_printf(dev, "trying to bind into stolen memory\n");
return (EINVAL);
}
sc->match->driver->install_gtt_pte(dev, index, physical, 0);
return (0);
}
static int
agp_i810_unbind_page(device_t dev, vm_offset_t offset)
{
struct agp_i810_softc *sc;
u_int index;
sc = device_get_softc(dev);
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return (EINVAL);
index = offset >> AGP_PAGE_SHIFT;
if (sc->stolen != 0 && index < sc->stolen) {
device_printf(dev, "trying to unbind from stolen memory\n");
return (EINVAL);
}
sc->match->driver->install_gtt_pte(dev, index, 0, 0);
return (0);
}
static u_int32_t
agp_i810_read_gtt_pte(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
sc = device_get_softc(dev);
pte = bus_read_4(sc->sc_res[0], AGP_I810_GTT + index * 4);
return (pte);
}
static u_int32_t
agp_i915_read_gtt_pte(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
sc = device_get_softc(dev);
pte = bus_read_4(sc->sc_res[1], index * 4);
return (pte);
}
static u_int32_t
agp_i965_read_gtt_pte(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
sc = device_get_softc(dev);
pte = bus_read_4(sc->sc_res[0], index * 4 + (512 * 1024));
return (pte);
}
static u_int32_t
agp_g4x_read_gtt_pte(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
sc = device_get_softc(dev);
pte = bus_read_4(sc->sc_res[0], index * 4 + (2 * 1024 * 1024));
return (pte);
}
static vm_paddr_t
agp_i810_read_gtt_pte_paddr(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
vm_paddr_t res;
sc = device_get_softc(dev);
pte = sc->match->driver->read_gtt_pte(dev, index);
res = pte & ~PAGE_MASK;
return (res);
}
static vm_paddr_t
agp_i915_read_gtt_pte_paddr(device_t dev, u_int index)
{
struct agp_i810_softc *sc;
u_int32_t pte;
vm_paddr_t res;
sc = device_get_softc(dev);
pte = sc->match->driver->read_gtt_pte(dev, index);
res = (pte & ~PAGE_MASK) | ((pte & 0xf0) << 28);
return (res);
}
/*
* Writing via memory mapped registers already flushes all TLBs.
*/
static void
agp_i810_flush_tlb(device_t dev)
{
}
static int
agp_i810_enable(device_t dev, u_int32_t mode)
{
return (0);
}
static struct agp_memory *
agp_i810_alloc_memory(device_t dev, int type, vm_size_t size)
{
struct agp_i810_softc *sc;
struct agp_memory *mem;
vm_page_t m;
sc = device_get_softc(dev);
if ((size & (AGP_PAGE_SIZE - 1)) != 0 ||
sc->agp.as_allocated + size > sc->agp.as_maxmem)
return (0);
if (type == 1) {
/*
* Mapping local DRAM into GATT.
*/
if (sc->match->driver->chiptype != CHIP_I810)
return (0);
if (size != sc->dcache_size)
return (0);
} else if (type == 2) {
/*
* Type 2 is the contiguous physical memory type, that hands
* back a physical address. This is used for cursors on i810.
* Hand back as many single pages with physical as the user
* wants, but only allow one larger allocation (ARGB cursor)
* for simplicity.
*/
if (size != AGP_PAGE_SIZE) {
if (sc->argb_cursor != NULL)
return (0);
/* Allocate memory for ARGB cursor, if we can. */
sc->argb_cursor = contigmalloc(size, M_AGP,
0, 0, ~0, PAGE_SIZE, 0);
if (sc->argb_cursor == NULL)
return (0);
}
}
mem = malloc(sizeof *mem, M_AGP, M_WAITOK);
mem->am_id = sc->agp.as_nextid++;
mem->am_size = size;
mem->am_type = type;
if (type != 1 && (type != 2 || size == AGP_PAGE_SIZE))
mem->am_obj = vm_object_allocate(OBJT_DEFAULT,
atop(round_page(size)));
else
mem->am_obj = 0;
if (type == 2) {
if (size == AGP_PAGE_SIZE) {
/*
* Allocate and wire down the page now so that we can
* get its physical address.
*/
VM_OBJECT_WLOCK(mem->am_obj);
m = vm_page_grab(mem->am_obj, 0, VM_ALLOC_NOBUSY |
VM_ALLOC_WIRED | VM_ALLOC_ZERO);
VM_OBJECT_WUNLOCK(mem->am_obj);
mem->am_physical = VM_PAGE_TO_PHYS(m);
} else {
/* Our allocation is already nicely wired down for us.
* Just grab the physical address.
*/
mem->am_physical = vtophys(sc->argb_cursor);
}
} else
mem->am_physical = 0;
mem->am_offset = 0;
mem->am_is_bound = 0;
TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link);
sc->agp.as_allocated += size;
return (mem);
}
static int
agp_i810_free_memory(device_t dev, struct agp_memory *mem)
{
struct agp_i810_softc *sc;
vm_page_t m;
if (mem->am_is_bound)
return (EBUSY);
sc = device_get_softc(dev);
if (mem->am_type == 2) {
if (mem->am_size == AGP_PAGE_SIZE) {
/*
* Unwire the page which we wired in alloc_memory.
*/
VM_OBJECT_WLOCK(mem->am_obj);
m = vm_page_lookup(mem->am_obj, 0);
vm_page_lock(m);
vm_page_unwire(m, PQ_INACTIVE);
vm_page_unlock(m);
VM_OBJECT_WUNLOCK(mem->am_obj);
} else {
contigfree(sc->argb_cursor, mem->am_size, M_AGP);
sc->argb_cursor = NULL;
}
}
sc->agp.as_allocated -= mem->am_size;
TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link);
if (mem->am_obj)
vm_object_deallocate(mem->am_obj);
free(mem, M_AGP);
return (0);
}
static int
agp_i810_bind_memory(device_t dev, struct agp_memory *mem, vm_offset_t offset)
{
struct agp_i810_softc *sc;
vm_offset_t i;
/* Do some sanity checks first. */
if ((offset & (AGP_PAGE_SIZE - 1)) != 0 ||
offset + mem->am_size > AGP_GET_APERTURE(dev)) {
device_printf(dev, "binding memory at bad offset %#x\n",
(int)offset);
return (EINVAL);
}
sc = device_get_softc(dev);
if (mem->am_type == 2 && mem->am_size != AGP_PAGE_SIZE) {
mtx_lock(&sc->agp.as_lock);
if (mem->am_is_bound) {
mtx_unlock(&sc->agp.as_lock);
return (EINVAL);
}
/* The memory's already wired down, just stick it in the GTT. */
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
sc->match->driver->install_gtt_pte(dev, (offset + i) >>
AGP_PAGE_SHIFT, mem->am_physical + i, 0);
}
mem->am_offset = offset;
mem->am_is_bound = 1;
mtx_unlock(&sc->agp.as_lock);
return (0);
}
if (mem->am_type != 1)
return (agp_generic_bind_memory(dev, mem, offset));
/*
* Mapping local DRAM into GATT.
*/
if (sc->match->driver->chiptype != CHIP_I810)
return (EINVAL);
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
bus_write_4(sc->sc_res[0],
AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, i | 3);
return (0);
}
static int
agp_i810_unbind_memory(device_t dev, struct agp_memory *mem)
{
struct agp_i810_softc *sc;
vm_offset_t i;
sc = device_get_softc(dev);
if (mem->am_type == 2 && mem->am_size != AGP_PAGE_SIZE) {
mtx_lock(&sc->agp.as_lock);
if (!mem->am_is_bound) {
mtx_unlock(&sc->agp.as_lock);
return (EINVAL);
}
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
sc->match->driver->install_gtt_pte(dev,
(mem->am_offset + i) >> AGP_PAGE_SHIFT, 0, 0);
}
mem->am_is_bound = 0;
mtx_unlock(&sc->agp.as_lock);
return (0);
}
if (mem->am_type != 1)
return (agp_generic_unbind_memory(dev, mem));
if (sc->match->driver->chiptype != CHIP_I810)
return (EINVAL);
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
sc->match->driver->install_gtt_pte(dev, i >> AGP_PAGE_SHIFT,
0, 0);
}
return (0);
}
static device_method_t agp_i810_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, agp_i810_identify),
DEVMETHOD(device_probe, agp_i810_probe),
DEVMETHOD(device_attach, agp_i810_attach),
DEVMETHOD(device_detach, agp_i810_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, agp_i810_resume),
/* AGP interface */
DEVMETHOD(agp_get_aperture, agp_generic_get_aperture),
DEVMETHOD(agp_set_aperture, agp_i810_method_set_aperture),
DEVMETHOD(agp_bind_page, agp_i810_bind_page),
DEVMETHOD(agp_unbind_page, agp_i810_unbind_page),
DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb),
DEVMETHOD(agp_enable, agp_i810_enable),
DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory),
DEVMETHOD(agp_free_memory, agp_i810_free_memory),
DEVMETHOD(agp_bind_memory, agp_i810_bind_memory),
DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory),
DEVMETHOD(agp_chipset_flush, agp_intel_gtt_chipset_flush),
{ 0, 0 }
};
static driver_t agp_i810_driver = {
"agp",
agp_i810_methods,
sizeof(struct agp_i810_softc),
};
static devclass_t agp_devclass;
DRIVER_MODULE(agp_i810, vgapci, agp_i810_driver, agp_devclass, 0, 0);
MODULE_DEPEND(agp_i810, agp, 1, 1, 1);
MODULE_DEPEND(agp_i810, pci, 1, 1, 1);
extern vm_page_t bogus_page;
void
agp_intel_gtt_clear_range(device_t dev, u_int first_entry, u_int num_entries)
{
struct agp_i810_softc *sc;
u_int i;
sc = device_get_softc(dev);
for (i = 0; i < num_entries; i++)
sc->match->driver->install_gtt_pte(dev, first_entry + i,
VM_PAGE_TO_PHYS(bogus_page), 0);
sc->match->driver->read_gtt_pte(dev, first_entry + num_entries - 1);
}
void
agp_intel_gtt_insert_pages(device_t dev, u_int first_entry, u_int num_entries,
vm_page_t *pages, u_int flags)
{
struct agp_i810_softc *sc;
u_int i;
sc = device_get_softc(dev);
for (i = 0; i < num_entries; i++) {
MPASS(pages[i]->valid == VM_PAGE_BITS_ALL);
MPASS(pages[i]->wire_count > 0);
sc->match->driver->install_gtt_pte(dev, first_entry + i,
VM_PAGE_TO_PHYS(pages[i]), flags);
}
sc->match->driver->read_gtt_pte(dev, first_entry + num_entries - 1);
}
struct intel_gtt
agp_intel_gtt_get(device_t dev)
{
struct agp_i810_softc *sc;
struct intel_gtt res;
sc = device_get_softc(dev);
res.stolen_size = sc->stolen_size;
res.gtt_total_entries = sc->gtt_total_entries;
res.gtt_mappable_entries = sc->gtt_mappable_entries;
res.do_idle_maps = 0;
res.scratch_page_dma = VM_PAGE_TO_PHYS(bogus_page);
if (sc->agp.as_aperture != NULL)
res.gma_bus_addr = rman_get_start(sc->agp.as_aperture);
else
res.gma_bus_addr = 0;
return (res);
}
static int
agp_i810_chipset_flush_setup(device_t dev)
{
return (0);
}
static void
agp_i810_chipset_flush_teardown(device_t dev)
{
/* Nothing to do. */
}
static void
agp_i810_chipset_flush(device_t dev)
{
/* Nothing to do. */
}
static void
agp_i830_chipset_flush(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t hic;
int i;
sc = device_get_softc(dev);
pmap_invalidate_cache();
hic = bus_read_4(sc->sc_res[0], AGP_I830_HIC);
bus_write_4(sc->sc_res[0], AGP_I830_HIC, hic | (1U << 31));
for (i = 0; i < 20000 /* 1 sec */; i++) {
hic = bus_read_4(sc->sc_res[0], AGP_I830_HIC);
if ((hic & (1U << 31)) == 0)
break;
DELAY(50);
}
}
static int
agp_i915_chipset_flush_alloc_page(device_t dev, uint64_t start, uint64_t end)
{
struct agp_i810_softc *sc;
device_t vga;
sc = device_get_softc(dev);
vga = device_get_parent(dev);
sc->sc_flush_page_rid = 100;
sc->sc_flush_page_res = BUS_ALLOC_RESOURCE(device_get_parent(vga), dev,
SYS_RES_MEMORY, &sc->sc_flush_page_rid, start, end, PAGE_SIZE,
RF_ACTIVE);
if (sc->sc_flush_page_res == NULL) {
device_printf(dev, "Failed to allocate flush page at 0x%jx\n",
(uintmax_t)start);
return (EINVAL);
}
sc->sc_flush_page_vaddr = rman_get_virtual(sc->sc_flush_page_res);
if (bootverbose) {
device_printf(dev, "Allocated flush page phys 0x%jx virt %p\n",
(uintmax_t)rman_get_start(sc->sc_flush_page_res),
sc->sc_flush_page_vaddr);
}
return (0);
}
static void
agp_i915_chipset_flush_free_page(device_t dev)
{
struct agp_i810_softc *sc;
device_t vga;
sc = device_get_softc(dev);
vga = device_get_parent(dev);
if (sc->sc_flush_page_res == NULL)
return;
BUS_DEACTIVATE_RESOURCE(device_get_parent(vga), dev, SYS_RES_MEMORY,
sc->sc_flush_page_rid, sc->sc_flush_page_res);
BUS_RELEASE_RESOURCE(device_get_parent(vga), dev, SYS_RES_MEMORY,
sc->sc_flush_page_rid, sc->sc_flush_page_res);
}
static int
agp_i915_chipset_flush_setup(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t temp;
int error;
sc = device_get_softc(dev);
temp = pci_read_config(sc->bdev, AGP_I915_IFPADDR, 4);
if ((temp & 1) != 0) {
temp &= ~1;
if (bootverbose)
device_printf(dev,
"Found already configured flush page at 0x%jx\n",
(uintmax_t)temp);
sc->sc_bios_allocated_flush_page = 1;
/*
* In the case BIOS initialized the flush pointer (?)
* register, expect that BIOS also set up the resource
* for the page.
*/
error = agp_i915_chipset_flush_alloc_page(dev, temp,
temp + PAGE_SIZE - 1);
if (error != 0)
return (error);
} else {
sc->sc_bios_allocated_flush_page = 0;
error = agp_i915_chipset_flush_alloc_page(dev, 0, 0xffffffff);
if (error != 0)
return (error);
temp = rman_get_start(sc->sc_flush_page_res);
pci_write_config(sc->bdev, AGP_I915_IFPADDR, temp | 1, 4);
}
return (0);
}
static void
agp_i915_chipset_flush_teardown(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t temp;
sc = device_get_softc(dev);
if (sc->sc_flush_page_res == NULL)
return;
if (!sc->sc_bios_allocated_flush_page) {
temp = pci_read_config(sc->bdev, AGP_I915_IFPADDR, 4);
temp &= ~1;
pci_write_config(sc->bdev, AGP_I915_IFPADDR, temp, 4);
}
agp_i915_chipset_flush_free_page(dev);
}
static int
agp_i965_chipset_flush_setup(device_t dev)
{
struct agp_i810_softc *sc;
uint64_t temp;
uint32_t temp_hi, temp_lo;
int error;
sc = device_get_softc(dev);
temp_hi = pci_read_config(sc->bdev, AGP_I965_IFPADDR + 4, 4);
temp_lo = pci_read_config(sc->bdev, AGP_I965_IFPADDR, 4);
if ((temp_lo & 1) != 0) {
temp = ((uint64_t)temp_hi << 32) | (temp_lo & ~1);
if (bootverbose)
device_printf(dev,
"Found already configured flush page at 0x%jx\n",
(uintmax_t)temp);
sc->sc_bios_allocated_flush_page = 1;
/*
* In the case BIOS initialized the flush pointer (?)
* register, expect that BIOS also set up the resource
* for the page.
*/
error = agp_i915_chipset_flush_alloc_page(dev, temp,
temp + PAGE_SIZE - 1);
if (error != 0)
return (error);
} else {
sc->sc_bios_allocated_flush_page = 0;
error = agp_i915_chipset_flush_alloc_page(dev, 0, ~0);
if (error != 0)
return (error);
temp = rman_get_start(sc->sc_flush_page_res);
pci_write_config(sc->bdev, AGP_I965_IFPADDR + 4,
(temp >> 32) & UINT32_MAX, 4);
pci_write_config(sc->bdev, AGP_I965_IFPADDR,
(temp & UINT32_MAX) | 1, 4);
}
return (0);
}
static void
agp_i965_chipset_flush_teardown(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t temp_lo;
sc = device_get_softc(dev);
if (sc->sc_flush_page_res == NULL)
return;
if (!sc->sc_bios_allocated_flush_page) {
temp_lo = pci_read_config(sc->bdev, AGP_I965_IFPADDR, 4);
temp_lo &= ~1;
pci_write_config(sc->bdev, AGP_I965_IFPADDR, temp_lo, 4);
}
agp_i915_chipset_flush_free_page(dev);
}
static void
agp_i915_chipset_flush(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
*(uint32_t *)sc->sc_flush_page_vaddr = 1;
}
int
agp_intel_gtt_chipset_flush(device_t dev)
{
struct agp_i810_softc *sc;
sc = device_get_softc(dev);
sc->match->driver->chipset_flush(dev);
return (0);
}
void
agp_intel_gtt_unmap_memory(device_t dev, struct sglist *sg_list)
{
}
int
agp_intel_gtt_map_memory(device_t dev, vm_page_t *pages, u_int num_entries,
struct sglist **sg_list)
{
struct agp_i810_softc *sc;
struct sglist *sg;
int i;
#if 0
int error;
bus_dma_tag_t dmat;
#endif
if (*sg_list != NULL)
return (0);
sc = device_get_softc(dev);
sg = sglist_alloc(num_entries, M_WAITOK /* XXXKIB */);
for (i = 0; i < num_entries; i++) {
sg->sg_segs[i].ss_paddr = VM_PAGE_TO_PHYS(pages[i]);
sg->sg_segs[i].ss_len = PAGE_SIZE;
}
#if 0
error = bus_dma_tag_create(bus_get_dma_tag(dev),
1 /* alignment */, 0 /* boundary */,
1ULL << sc->match->busdma_addr_mask_sz /* lowaddr */,
BUS_SPACE_MAXADDR /* highaddr */,
NULL /* filtfunc */, NULL /* filtfuncarg */,
BUS_SPACE_MAXADDR /* maxsize */,
BUS_SPACE_UNRESTRICTED /* nsegments */,
BUS_SPACE_MAXADDR /* maxsegsz */,
0 /* flags */, NULL /* lockfunc */, NULL /* lockfuncarg */,
&dmat);
if (error != 0) {
sglist_free(sg);
return (error);
}
/* XXXKIB */
#endif
*sg_list = sg;
return (0);
}
void
agp_intel_gtt_insert_sg_entries(device_t dev, struct sglist *sg_list,
u_int first_entry, u_int flags)
{
struct agp_i810_softc *sc;
vm_paddr_t spaddr;
size_t slen;
u_int i, j;
sc = device_get_softc(dev);
for (i = j = 0; j < sg_list->sg_nseg; j++) {
spaddr = sg_list->sg_segs[i].ss_paddr;
slen = sg_list->sg_segs[i].ss_len;
for (; slen > 0; i++) {
sc->match->driver->install_gtt_pte(dev, first_entry + i,
spaddr, flags);
spaddr += AGP_PAGE_SIZE;
slen -= AGP_PAGE_SIZE;
}
}
sc->match->driver->read_gtt_pte(dev, first_entry + i - 1);
}
void
intel_gtt_clear_range(u_int first_entry, u_int num_entries)
{
agp_intel_gtt_clear_range(intel_agp, first_entry, num_entries);
}
void
intel_gtt_insert_pages(u_int first_entry, u_int num_entries, vm_page_t *pages,
u_int flags)
{
agp_intel_gtt_insert_pages(intel_agp, first_entry, num_entries,
pages, flags);
}
struct intel_gtt *
intel_gtt_get(void)
{
intel_private.base = agp_intel_gtt_get(intel_agp);
return (&intel_private.base);
}
int
intel_gtt_chipset_flush(void)
{
return (agp_intel_gtt_chipset_flush(intel_agp));
}
void
intel_gtt_unmap_memory(struct sglist *sg_list)
{
agp_intel_gtt_unmap_memory(intel_agp, sg_list);
}
int
intel_gtt_map_memory(vm_page_t *pages, u_int num_entries,
struct sglist **sg_list)
{
return (agp_intel_gtt_map_memory(intel_agp, pages, num_entries,
sg_list));
}
void
intel_gtt_insert_sg_entries(struct sglist *sg_list, u_int first_entry,
u_int flags)
{
agp_intel_gtt_insert_sg_entries(intel_agp, sg_list, first_entry, flags);
}
device_t
intel_gtt_get_bridge_device(void)
{
struct agp_i810_softc *sc;
sc = device_get_softc(intel_agp);
return (sc->bdev);
}
vm_paddr_t
intel_gtt_read_pte_paddr(u_int entry)
{
struct agp_i810_softc *sc;
sc = device_get_softc(intel_agp);
return (sc->match->driver->read_gtt_pte_paddr(intel_agp, entry));
}
u_int32_t
intel_gtt_read_pte(u_int entry)
{
struct agp_i810_softc *sc;
sc = device_get_softc(intel_agp);
return (sc->match->driver->read_gtt_pte(intel_agp, entry));
}
void
intel_gtt_write(u_int entry, uint32_t val)
{
struct agp_i810_softc *sc;
sc = device_get_softc(intel_agp);
return (sc->match->driver->write_gtt(intel_agp, entry, val));
}
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