/* * 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; 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); /* 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); static inline void agp_free_page_array(struct agp_memory *mem) { kvfree(mem->pages); } /* 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); /* GATT allocation. Returns/accepts GATT kernel virtual address. */ #define alloc_gatt_pages(order) \ ((char *)__get_free_pages(GFP_KERNEL, (order))) #define free_gatt_pages(table, order) \ free_pages((unsigned long)(table), (order)) /* 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 */