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freebsd-skq/sys/dev/agp/agp_i810.c
tijl 8120ba89b2 In agp(4) avoid the need to flush all cpu caches with wbinvd between 
updating the GTT and flushing the AGP TLB by storing the GTT in
write-combining memory.

On x86 flushing the AGP TLB is done by an I/O operation or a store to a
MMIO register in uncacheable memory.  Both cases imply that WC buffers are
flushed so no memory barriers are needed.

On powerpc there is no WC memory type.  It maps to uncacheable memory and
two stores to uncacheable memory, such as to the GTT and then to an MMIO
register, are strongly ordered, so no memory barriers are needed either.

MFC after:	1 month
2014-11-02 11:26:37 +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 int agp_sb_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 void agp_sb_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_sb_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_sb_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 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_sb_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 void agp_sb_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 vm_paddr_t agp_sb_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 */
CHIP_SB, /* SandyBridge */
};
/* 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 },
{ -1, 0 }
};
static struct resource_spec agp_g4x_res_spec[] = {
{ SYS_RES_MEMORY, AGP_G4X_MMADR, RF_ACTIVE | RF_SHAREABLE },
{ SYS_RES_MEMORY, AGP_G4X_GTTADR, 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 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_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_i830_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_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_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_i830_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,
};
static const struct agp_i810_driver agp_i810_sb_driver = {
.chiptype = CHIP_SB,
.gen = 6,
.busdma_addr_mask_sz = 40,
.res_spec = agp_g4x_res_spec,
.check_active = agp_sb_check_active,
.set_desc = agp_i810_set_desc,
.dump_regs = agp_sb_dump_regs,
.get_stolen_size = agp_sb_get_stolen_size,
.get_gtt_mappable_entries = agp_i915_get_gtt_mappable_entries,
.get_gtt_total_entries = agp_sb_get_gtt_total_entries,
.install_gatt = agp_i830_install_gatt,
.deinstall_gatt = agp_i830_deinstall_gatt,
.write_gtt = agp_sb_write_gtt,
.install_gtt_pte = agp_sb_install_gtt_pte,
.read_gtt_pte = agp_g4x_read_gtt_pte,
.read_gtt_pte_paddr = agp_sb_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_i810_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 = 0x01028086,
.name = "SandyBridge desktop GT1 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01128086,
.name = "SandyBridge desktop GT2 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01228086,
.name = "SandyBridge desktop GT2+ IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01068086,
.name = "SandyBridge mobile GT1 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01168086,
.name = "SandyBridge mobile GT2 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01268086,
.name = "SandyBridge mobile GT2+ IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x010a8086,
.name = "SandyBridge server IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01528086,
.name = "IvyBridge desktop GT1 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01628086,
.name = "IvyBridge desktop GT2 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01568086,
.name = "IvyBridge mobile GT1 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x01668086,
.name = "IvyBridge mobile GT2 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x015a8086,
.name = "IvyBridge server GT1 IG",
.driver = &agp_i810_sb_driver
},
{
.devid = 0x016a8086,
.name = "IvyBridge server GT2 IG",
.driver = &agp_i810_sb_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)
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 int
agp_sb_check_active(device_t bridge_dev)
{
int deven;
deven = pci_read_config(bridge_dev, AGP_I915_DEVEN, 4);
if ((deven & AGP_SB_DEVEN_D2EN) == AGP_SB_DEVEN_D2EN_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 void
agp_sb_dump_regs(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
device_printf(dev, "AGP_SNB_GFX_MODE: %08x\n",
bus_read_4(sc->sc_res[0], AGP_SNB_GFX_MODE));
device_printf(dev, "AGP_SNB_GCC1: 0x%04x\n",
pci_read_config(sc->bdev, AGP_SNB_GCC1, 2));
}
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_sb_get_stolen_size(device_t dev)
{
struct agp_i810_softc *sc;
uint16_t gmch_ctl;
sc = device_get_softc(dev);
gmch_ctl = pci_read_config(sc->bdev, AGP_SNB_GCC1, 2);
switch (gmch_ctl & AGP_SNB_GMCH_GMS_STOLEN_MASK) {
case AGP_SNB_GMCH_GMS_STOLEN_32M:
sc->stolen_size = 32 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_64M:
sc->stolen_size = 64 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_96M:
sc->stolen_size = 96 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_128M:
sc->stolen_size = 128 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_160M:
sc->stolen_size = 160 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_192M:
sc->stolen_size = 192 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_224M:
sc->stolen_size = 224 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_256M:
sc->stolen_size = 256 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_288M:
sc->stolen_size = 288 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_320M:
sc->stolen_size = 320 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_352M:
sc->stolen_size = 352 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_384M:
sc->stolen_size = 384 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_416M:
sc->stolen_size = 416 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_448M:
sc->stolen_size = 448 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_480M:
sc->stolen_size = 480 * 1024 * 1024;
break;
case AGP_SNB_GMCH_GMS_STOLEN_512M:
sc->stolen_size = 512 * 1024 * 1024;
break;
}
sc->stolen = (sc->stolen_size - 4) / 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_sb_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_SNB_GCC1, 2);
switch (gcc1 & AGP_SNB_GTT_SIZE_MASK) {
default:
case AGP_SNB_GTT_SIZE_0M:
printf("Bad GTT size mask: 0x%04x\n", gcc1);
return (ENXIO);
case AGP_SNB_GTT_SIZE_1M:
sc->gtt_total_entries = 1024 * 1024 / 4;
break;
case AGP_SNB_GTT_SIZE_2M:
sc->gtt_total_entries = 2 * 1024 * 1024 / 4;
break;
}
return (0);
}
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 int
agp_i830_install_gatt(device_t dev)
{
struct agp_i810_softc *sc;
uint32_t pgtblctl;
sc = device_get_softc(dev);
/*
* 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;
return (0);
}
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 void
agp_sb_install_gtt_pte(device_t dev, u_int index, vm_offset_t physical,
int flags)
{
int type_mask, gfdt;
uint32_t pte;
pte = (u_int32_t)physical | I810_PTE_VALID;
type_mask = flags & ~AGP_USER_CACHED_MEMORY_GFDT;
gfdt = (flags & AGP_USER_CACHED_MEMORY_GFDT) != 0 ? GEN6_PTE_GFDT : 0;
if (type_mask == AGP_USER_MEMORY)
pte |= GEN6_PTE_UNCACHED;
else if (type_mask == AGP_USER_CACHED_MEMORY_LLC_MLC)
pte |= GEN6_PTE_LLC_MLC | gfdt;
else
pte |= GEN6_PTE_LLC | gfdt;
pte |= (physical & 0x000000ff00000000ull) >> 28;
agp_sb_write_gtt(dev, index, pte);
}
static void
agp_sb_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, "sb_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);
}
static vm_paddr_t
agp_sb_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 & 0xff0) << 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);
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)
{
return (agp_intel_gtt_get(intel_agp));
}
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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