f7511f4dbb
This adds a function to agp.c to set the aperture resource ID if it's not the usual AGP_APBASE. Previously, agp.c had been assuming AGP_APBASE, which resulted in incorrect agp_info, and contortions by agp_i810.c to work around it. This also adds functions to agp.c for default AGP_GET_APERTURE() and AGP_SET_APERTURE(), which return the aperture resource size and disallow aperture size changes. Moving to these for our AGP drivers will likely result in stability improvements. This should fix 855-class aperture size detection. Additionally, refuse to attach agp_i810 when some RAM is above 4GB and the GART can't reference memory that high. This should be very rare. The correct solution would be bus_dma conversion for agp, which is beyond the scope of this change. Other AGP drivers could likely use this change as well. G33/Q35/Q33 AGP support is also included, but disconnected by default due to lack of testing. PR: kern/109724 (855 aperture issue) Submitted by: FUJIMOTO Kou<fujimoto@j.dendai.ac.jp> Approved by: re (hrs)
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/*-
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* Copyright (c) 2000 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PCI_AGPPRIV_H_
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#define _PCI_AGPPRIV_H_
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/*
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* This file *must not* be included by code outside the agp driver itself.
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*/
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#include <sys/agpio.h>
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#include <pci/agpvar.h>
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#define AGP_DEBUGxx
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#ifdef AGP_DEBUG
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#define AGP_DPF(x...) do { \
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printf("agp: "); \
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printf(##x); \
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} while (0)
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#else
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#define AGP_DPF(x...) do {} while (0)
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#endif
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#include "agp_if.h"
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/*
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* Data structure to describe an AGP memory allocation.
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*/
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TAILQ_HEAD(agp_memory_list, agp_memory);
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struct agp_memory {
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TAILQ_ENTRY(agp_memory) am_link; /* wiring for the tailq */
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int am_id; /* unique id for block */
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vm_size_t am_size; /* number of bytes allocated */
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int am_type; /* chipset specific type */
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struct vm_object *am_obj; /* VM object owning pages */
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vm_offset_t am_physical; /* bogus hack for i810 */
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vm_offset_t am_offset; /* page offset if bound */
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int am_is_bound; /* non-zero if bound */
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};
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/*
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* All chipset drivers must have this at the start of their softc.
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*/
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struct agp_softc {
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struct resource *as_aperture; /* location of aperture */
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int as_aperture_rid;
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u_int32_t as_maxmem; /* allocation upper bound */
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u_int32_t as_allocated; /* amount allocated */
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enum agp_acquire_state as_state;
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struct agp_memory_list as_memory; /* list of allocated memory */
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int as_nextid; /* next memory block id */
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int as_isopen; /* user device is open */
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struct cdev *as_devnode; /* from make_dev */
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struct mtx as_lock; /* lock for access to GATT */
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};
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struct agp_gatt {
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u_int32_t ag_entries;
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u_int32_t *ag_virtual;
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vm_offset_t ag_physical;
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};
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void agp_flush_cache(void);
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u_int8_t agp_find_caps(device_t dev);
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struct agp_gatt *agp_alloc_gatt(device_t dev);
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void agp_set_aperture_resource(device_t dev, int rid);
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void agp_free_gatt(struct agp_gatt *gatt);
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int agp_generic_attach(device_t dev);
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int agp_generic_detach(device_t dev);
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int agp_generic_get_aperture(device_t dev);
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int agp_generic_set_aperture(device_t dev,
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u_int32_t aperture);
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int agp_generic_enable(device_t dev, u_int32_t mode);
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struct agp_memory *agp_generic_alloc_memory(device_t dev, int type,
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vm_size_t size);
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int agp_generic_free_memory(device_t dev,
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struct agp_memory *mem);
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int agp_generic_bind_memory(device_t dev,
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struct agp_memory *mem,
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vm_offset_t offset);
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int agp_generic_unbind_memory(device_t dev,
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struct agp_memory *mem);
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#endif /* !_PCI_AGPPRIV_H_ */
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