diff options
Diffstat (limited to 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/calgary.h | 66 | ||||
| -rw-r--r-- | include/asm-x86_64/pci.h | 2 | ||||
| -rw-r--r-- | include/asm-x86_64/tce.h | 47 |
3 files changed, 114 insertions, 1 deletions
diff --git a/include/asm-x86_64/calgary.h b/include/asm-x86_64/calgary.h new file mode 100644 index 00000000000..6e1654f3098 --- /dev/null +++ b/include/asm-x86_64/calgary.h @@ -0,0 +1,66 @@ +/* + * Derived from include/asm-powerpc/iommu.h + * + * Copyright (C) 2006 Jon Mason <jdmason@us.ibm.com>, IBM Corporation + * Copyright (C) 2006 Muli Ben-Yehuda <muli@il.ibm.com>, IBM Corporation + * + * 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_64_CALGARY_H +#define _ASM_X86_64_CALGARY_H + +#include <linux/config.h> +#include <linux/spinlock.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <asm/types.h> + +struct iommu_table { + 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 */ + 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 */ + void __iomem *bbar; + u64 tar_val; + struct timer_list watchdog_timer; +}; + +#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 + +#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 + +static inline unsigned int bus_to_phb(unsigned char busno) +{ + return ((busno % 15 == 0) ? 0 : busno / 2 + 1); +} + +#endif /* _ASM_X86_64_CALGARY_H */ diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h index 4dbc07c54f7..49c5e928059 100644 --- a/include/asm-x86_64/pci.h +++ b/include/asm-x86_64/pci.h @@ -52,7 +52,7 @@ extern int iommu_setup(char *opt); */ #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) -#ifdef CONFIG_IOMMU +#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU) /* * x86-64 always supports DAC, but sometimes it is useful to force diff --git a/include/asm-x86_64/tce.h b/include/asm-x86_64/tce.h new file mode 100644 index 00000000000..ee51d31528d --- /dev/null +++ b/include/asm-x86_64/tce.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2006 Muli Ben-Yehuda <muli@il.ibm.com>, IBM Corporation + * Copyright (C) 2006 Jon Mason <jdmason@us.ibm.com>, IBM Corporation + * + * This file is derived from asm-powerpc/tce.h. + * + * 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_64_TCE_H +#define _ASM_X86_64_TCE_H + +extern void* tce_table_kva[]; +extern unsigned int specified_table_size; +struct iommu_table; + +#define TCE_ENTRY_SIZE 8 /* in bytes */ + +#define TCE_READ_SHIFT 0 +#define TCE_WRITE_SHIFT 1 +#define TCE_HUBID_SHIFT 2 /* unused */ +#define TCE_RSVD_SHIFT 8 /* unused */ +#define TCE_RPN_SHIFT 12 +#define TCE_UNUSED_SHIFT 48 /* unused */ + +#define TCE_RPN_MASK 0x0000fffffffff000ULL + +extern void tce_build(struct iommu_table *tbl, unsigned long index, + unsigned int npages, unsigned long uaddr, int direction); +extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages); +extern void* alloc_tce_table(void); +extern void free_tce_table(void *tbl); +extern int build_tce_table(struct pci_dev *dev, void __iomem *bbar); + +#endif /* _ASM_X86_64_TCE_H */ |