/*
* AGPGART
* Copyright (C) 2004 Silicon Graphics, Inc.
* Copyright (C) 2002-2004 Dave Jones
* Copyright (C) 1999 Jeff Hartmann
* Copyright (C) 1999 Precision Insight, Inc.
* Copyright (C) 1999 Xi Graphics, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef _AGP_BACKEND_PRIV_H
#define _AGP_BACKEND_PRIV_H 1
#include <asm/agp.h> /* for flush_agp_cache() */
#define PFX "agpgart: "
//#define AGP_DEBUG 1
#ifdef AGP_DEBUG
#define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y)
#else
#define DBG(x,y...) do { } while (0)
#endif
extern struct agp_bridge_data *agp_bridge;
enum aper_size_type {
U8_APER_SIZE,
U16_APER_SIZE,
U32_APER_SIZE,
LVL2_APER_SIZE,
FIXED_APER_SIZE
};
struct gatt_mask {
unsigned long mask;
u32 type;
/* totally device specific, for integrated chipsets that
* might have different types of memory masks. For other
* devices this will probably be ignored */
};
#define AGP_PAGE_DESTROY_UNMAP 1
#define AGP_PAGE_DESTROY_FREE 2
struct aper_size_info_8 {
int size;
int num_entries;
int page_order;
u8 size_value;
};
struct aper_size_info_16 {
int size;
int num_entries;
int page_order;
u16 size_value;
};
struct aper_size_info_32 {
int size;
int num_entries;
int page_order;
u32 size_value;
};
struct aper_size_info_lvl2 {
int size;
int num_entries;
u32 size_value;
};
struct aper_size_info_fixed {
int size;
int num_entries;
int page_order;
};
struct agp_bridge_driver {
struct module *owner;
const void *aperture_sizes;
int num_aperture_sizes;
enum aper_size_type size_type;
bool cant_use_aperture;
bool needs_scratch_page;
const struct gatt_mask *masks;
int (*fetch_size)(void);
int (*configure)(void);
void (*agp_enable)(struct agp_bridge_data *, u32);
void (*cleanup)(void);
void (*tlb_flush)(struct agp_memory *);
unsigned long (*mask_memory)(struct agp_bridge_data *, dma_addr_t, int);
void (*cache_flush)(void);
int (*create_gatt_table)(struct agp_bridge_data *);
int (*free_gatt_table)(struct agp_bridge_data *);
int (*insert_memory)(struct agp_memory *, off_t, int);
int (*remove_memory)(struct agp_memory *, off_t, int);
struct agp_memory *(*alloc_by_type) (size_t, int);
void (*free_by_type)(struct agp_memory *);
struct page *(*agp_alloc_page)(struct agp_bridge_data *);
int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
void (*agp_destroy_page)(struct page *, int flags);
void (*agp_destroy_pages)(struct agp_memory *);
int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
};
struct agp_bridge_data {
const struct agp_version *version;
const struct agp_bridge_driver *driver;
const struct vm_operations_struct *vm_ops;
void *previous_size;
void *current_size;
void *dev_private_data;
struct pci_dev *dev;
u32 __iomem *gatt_table;
u32 *gatt_table_real;
unsigned long scratch_page;
struct page *scratch_page_page;
dma_addr_t scratch_page_dma;
unsigned long gart_bus_addr;
unsigned long gatt_bus_addr;
u32 mode;
enum chipset_type type;
unsigned long *key_list;
atomic_t current_memory_agp;
atomic_t agp_in_use;
int max_memory_agp; /* in number of pages */
int aperture_size_idx;
int capndx;
int flags;
char major_version;
char minor_version;
struct list_head list;
u32 apbase_config;
/* list of agp_memory mapped to the aperture */
struct list_head mapped_list;
spinlock_t mapped_lock;
};
#define KB(x) ((x) * 1024)
#define MB(x) (KB (KB (x)))
#define GB(x) (MB (KB (x)))
#define A_SIZE_8(x) ((struct aper_size_info_8 *) x)
#define A_SIZE_16(x) ((struct aper_size_info_16 *) x)
#define A_SIZE_32(x) ((struct aper_size_info_32 *) x)
#define A_SIZE_LVL2(x) ((struct aper_size_info_lvl2 *) x)
#define A_SIZE_FIX(x) ((struct aper_size_info_fixed *) x)
#define A_IDX8(bridge) (A_SIZE_8((bridge)->driver->aperture_sizes) + i)
#define A_IDX16(bridge) (A_SIZE_16((bridge)->driver->aperture_sizes) + i)
#define A_IDX32(bridge) (A_SIZE_32((bridge)->driver->aperture_sizes) + i)
#define MAXKEY (4096 * 32)
#define PGE_EMPTY(b, p) (!(p) || (p) == (unsigned long) (b)->scratch_page)
struct agp_device_ids {
unsigned short device_id; /* first, to make table easier to read */
enum chipset_type chipset;
const char *chipset_name;
int (*chipset_setup) (struct pci_dev *pdev); /* used to override generic */
};
/* Driver registration */
struct agp_bridge_data *agp_alloc_bridge(void);
void agp_put_bridge(struct agp_bridge_data *bridge);
int agp_add_bridge(struct agp_bridge_data *bridge);
void agp_remove_bridge(struct agp_bridge_data *bridge);
/* Frontend routines. */
int agp_frontend_initialize(void);
void agp_frontend_cleanup(void);
/* Generic routines. */
void agp_generic_enable(struct agp_bridge_data *bridge, u32 mode);
int agp_generic_create_gatt_table(struct agp_bridge_data *bridge);
int agp_generic_free_gatt_table(struct agp_bridge_data *bridge);
struct agp_memory *agp_create_memory(int scratch_pages);
int agp_generic_insert_memory(struct agp_memory *mem, off_t pg_start, int type);
int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
void agp_generic_free_by_type(struct agp_memory *curr);
struct page *agp_generic_alloc_page(struct agp_bridge_data *bridge);
int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
struct agp_memory *memory, size_t page_count);
void agp_generic_destroy_page(struct page *page, int flags);
void agp_generic_destroy_pages(struct agp_memory *memory);
void agp_free_key(int key);
int agp_num_entries(void);
u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 mode, u32 command);
void agp_device_command(u32 command, bool agp_v3);
int agp_3_5_enable(struct agp_bridge_data *bridge);
void global_cache_flush(void);
void get_agp_version(struct agp_bridge_data *bridge);
unsigned long agp_generic_mask_memory(struct agp_bridge_data *bridge,
dma_addr_t phys, int type);
int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
int type);
struct agp_bridge_data *agp_generic_find_bridge(struct pci_dev *pdev);
/* generic functions for user-populated AGP memory types */
struct agp_memory *agp_generic_alloc_user(size_t page_count, int type);
void agp_alloc_page_array(size_t size, struct agp_memory *mem);
void agp_free_page_array(struct agp_memory *mem);
/* generic routines for agp>=3 */
int agp3_generic_fetch_size(void);
void agp3_generic_tlbflush(struct agp_memory *mem);
int agp3_generic_configure(void);
void agp3_generic_cleanup(void);
/* aperture sizes have been standardised since v3 */
#define AGP_GENERIC_SIZES_ENTRIES 11
extern const struct aper_size_info_16 agp3_generic_sizes[];
extern int agp_off;
extern int agp_try_unsupported_boot;
long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* Chipset independent registers (from AGP Spec) */
#define AGP_APBASE 0x10
#define AGP_APERTURE_BAR 0
#define AGPSTAT 0x4
#define AGPCMD 0x8
#define AGPNISTAT 0xc
#define AGPCTRL 0x10
#define AGPAPSIZE 0x14
#define AGPNEPG 0x16
#define AGPGARTLO 0x18
#define AGPGARTHI 0x1c
#define AGPNICMD 0x20
#define AGP_MAJOR_VERSION_SHIFT (20)
#define AGP_MINOR_VERSION_SHIFT (16)
#define AGPSTAT_RQ_DEPTH (0xff000000)
#define AGPSTAT_RQ_DEPTH_SHIFT 24
#define AGPSTAT_CAL_MASK (1<<12|1<<11|1<<10)
#define AGPSTAT_ARQSZ (1<<15|1<<14|1<<13)
#define AGPSTAT_ARQSZ_SHIFT 13
#define AGPSTAT_SBA (1<<9)
#define AGPSTAT_AGP_ENABLE (1<<8)
#define AGPSTAT_FW (1<<4)
#define AGPSTAT_MODE_3_0 (1<<3)
#define AGPSTAT2_1X (1<<0)
#define AGPSTAT2_2X (1<<1)
#define AGPSTAT2_4X (1<<2)
#define AGPSTAT3_RSVD (1<<2)
#define AGPSTAT3_8X (1<<1)
#define AGPSTAT3_4X (1)
#define AGPCTRL_APERENB (1<<8)
#define AGPCTRL_GTLBEN (1<<7)
#define AGP2_RESERVED_MASK 0x00fffcc8
#define AGP3_RESERVED_MASK 0x00ff00c4
#define AGP_ERRATA_FASTWRITES 1<<0
#define AGP_ERRATA_SBA 1<<1
#define AGP_ERRATA_1X 1<<2
#endif /* _AGP_BACKEND_PRIV_H */
