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Diffstat (limited to 'arch/x86/include/asm/calgary.h')
| -rw-r--r-- | arch/x86/include/asm/calgary.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/x86/include/asm/calgary.h b/arch/x86/include/asm/calgary.h new file mode 100644 index 00000000000..933fd272f82 --- /dev/null +++ b/arch/x86/include/asm/calgary.h @@ -0,0 +1,72 @@ +/* + * Derived from include/asm-powerpc/iommu.h + * + * Copyright IBM Corporation, 2006-2007 + * + * Author: Jon Mason <jdmason@us.ibm.com> + * Author: Muli Ben-Yehuda <muli@il.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef ASM_X86__CALGARY_H +#define ASM_X86__CALGARY_H + +#include <linux/spinlock.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/timer.h> +#include <asm/types.h> + +struct iommu_table { + struct cal_chipset_ops *chip_ops; /* chipset specific funcs */ + unsigned long it_base; /* mapped address of tce table */ + unsigned long it_hint; /* Hint for next alloc */ + unsigned long *it_map; /* A simple allocation bitmap for now */ + void __iomem *bbar; /* Bridge BAR */ + u64 tar_val; /* Table Address Register */ + struct timer_list watchdog_timer; + spinlock_t it_lock; /* Protects it_map */ + unsigned int it_size; /* Size of iommu table in entries */ + unsigned char it_busno; /* Bus number this table belongs to */ +}; + +struct cal_chipset_ops { + void (*handle_quirks)(struct iommu_table *tbl, struct pci_dev *dev); + void (*tce_cache_blast)(struct iommu_table *tbl); + void (*dump_error_regs)(struct iommu_table *tbl); +}; + +#define TCE_TABLE_SIZE_UNSPECIFIED ~0 +#define TCE_TABLE_SIZE_64K 0 +#define TCE_TABLE_SIZE_128K 1 +#define TCE_TABLE_SIZE_256K 2 +#define TCE_TABLE_SIZE_512K 3 +#define TCE_TABLE_SIZE_1M 4 +#define TCE_TABLE_SIZE_2M 5 +#define TCE_TABLE_SIZE_4M 6 +#define TCE_TABLE_SIZE_8M 7 + +extern int use_calgary; + +#ifdef CONFIG_CALGARY_IOMMU +extern int calgary_iommu_init(void); +extern void detect_calgary(void); +#else +static inline int calgary_iommu_init(void) { return 1; } +static inline void detect_calgary(void) { return; } +#endif + +#endif /* ASM_X86__CALGARY_H */ |